Web Engineering (Spring 21)

Section outline

• Select section Introduction

  Introduction

  Collapse all Expand all

  Daffodil International University Department of Computer Science and Engineering

  
  
                                                                   
  

                             

  • Select activity Welcome to Web Engineering!  ...

    Welcome to Web Engineering! 
    

    Course Details
    Course Code	CSE417
    Course Title	Web Engineering
    Program	B.Sc. in CSE
    Faculty	Faculty of Science and Information Technology (FSIT)
    Semester	Spring	Year	2021
    Credit	3	Contact Hour	3hours/week
    Course Level	Level 4 Term 1	Prerequisite	CSE333

    
    

                                                Welcome Video for my beloved students

    
    

                                        

  • Select activity Announcements

    

    Announcements Forum
  • Select activity Instructor Details Instructor    : Md A...

    Instructor Details
    

    Instructor    : Md Assaduzzaman
    

    Designation : Lecturer

    Office           : Room 506 ,AB-4
    

    Cell Phone   : 01824089009
    

    Email            :assaduzzaman.cse@diu.edu.bd

    Website        : sites.google.com/view/mdassaduzzaman

    
    
  • Select activity Course RationaleInternet and Web become an integ...

    Course Rationale
    

    Internet and Web become an integral part of human life. It exists in every possible dimensions which makes this art essential to learn. This course studies both theoretical and practical approach to Web Engineering through various real life problems &solutions. And how state of the art technologies can be learned and used later.
    
    Course Objective
    This course aims to provide students a systematic approach to develop deep understanding of web technologies by providing hands on experience. Students will be able to learn new technologies, analyse existing web applications/systems and design new oneefficiently after the course.
    
    Course Outcomes (CO’s) 
    CO1.   Have an understanding of different programming techniques, protocols available for development
    CO2.   Have the abilities to analyse and describe the system requirements
    CO3.   Taking critical decision regarding client and server-side development
    CO4.   Be able to evaluate existing systems and build new systems by applying state of the art technology
    
  • Select activity Evaluation Criteria ...

    Evaluation Criteria
    

    Theory	Lab
    Attendance: 7% Class Tests/Quizzes:  15%  Assignment: 5% Presentation (using video/ppt): 8% Midterm Exam: 25% Final Exam: 40%	Lab Attendance: 10% Project : 40% Lab Performance: 25% Lab Report (IEEE Format): 25%

    [All assessment will be based on onsite/online situation]
    

  • Select activity Recommended Text S. Schafer, Web ...

    Recommended Text

    • S. Schafer, Web Standards, Wiley Publishing, 2005, ISBN 978-0-7645-8820-4.

    Resources
    

    • Google Drive Repository
    • Course Outline
      
    • Books
    • Lecture Notes/Presentations
      
    • Assignments
    • Lab Materials
    • Lab Report Template (IEEE formt)
    • Student Attendance Sheet

    • Online Course by University of Liverpool [Highly Recommended]
  • Select activity Student Interest Discovery

    

    Student Interest Discovery Survey
  • Select activity Announcements

    

    Announcements Forum
  • Select activity Telegram Group Link

    

    Telegram Group Link URL

    Completion

    Students must

    

    Mark as done
  • Select activity Google Meet Link

    

    Google Meet Link URL

    Completion

    Students must

    

    Mark as done
  • Select activity Google classroom code : ykvgoqr

    Completion

    Students must

    

    Mark as done

    Google classroom code : ykvgoqr

  • Select activity Google Classroom Link

    

    Google Classroom Link URL

    Completion

    Students must

    

    Mark as done
  • Select activity Online Editior

    

    Online Editior URL

    Completion

    Students must

    

    Mark as done
  • Select activity Appointment in Google Calendar

    

    Appointment in Google Calendar URL

    Completion

    Students must

    

    Mark as done
  • Select activity Quick Navigation ...

    Completion

    Students must

    

    Mark as done

    
    

    Quick Navigation

    Class Test: CT1, CT2, CT3      Assignment: ASN1, ASN2, ASN3       Presentation        Mid Exam       Final Exam
    Week2Go:   WK1    WK2    WK3    WK4    WK5    WK6   WK7    WK8    WK9    WK10    WK11    WK12    WK13    WK14

    
    
• Select section Week 1: SWE Background and the Web(13th September 2020- 21st september 2020)

  Week 1: SWE Background and the Web(13th September 2020- 21st september 2020)

  • Topics

  1. Overview 
  2. Internet and the Web
  3. Client-Server Paradigm
  4. Requirement Engineering
     

  • Learning Outcome

  1. Differentiate between Web and Internet
  2. Understand Client-Server Paradigm
  3. Select the appropriate tools
  4. Analyse and Design System Requirements 

  • Lab Session 1: Introduction to the Web Engineering and different toolsURL 

  1. Roadmap: https://www.w3schools.com/whatis/
  2. Tools: Editors: Netbeans/Sublime Text/PHP Storm/ VSCode/Notepad/ Notepad++, WAMP/ XAMP

  • Select activity Necessity of SWE and Computer Networking

    

    Necessity of SWE and Computer Networking URL
  • Select activity Are web developers software engineers?

    

    Are web developers software engineers? URL
  • Select activity PDF: Introduction about Web

    

    PDF: Introduction about Web File

    Completion

    Students must

    

    Mark as done
  • Select activity Pre-recorded Video Lecture:Lecture-1(Introduction-...

    Completion

    Students must

    

    Mark as done

    Pre-recorded Video Lecture:
    Lecture-1(Introduction-1)
    Lecture-2(Introduction-2)

  • Select activity Class Video Lecture:Lecture-1(Introduction -1)Lect...

    Completion

    Students must

    

    Mark as done

    Class Video Lecture:
    Lecture-1(Introduction -1)
    Lecture-2(Introduction-2)

  • Select activity Assignment on Introduction about Web

    

    Assignment on Introduction about Web

    Completion

    Students must

    

    Mark as done
  • Select activity Forum discussion on Introduction about web apps.

    

    Forum discussion on Introduction about web apps.

    Completion

    Students must

    

    Mark as done
  • Select activity Interactive contents on Introduction about web.

    

    Interactive contents on Introduction about web.

    Completion

    Students must

    

    Mark as done
  • Select activity Reference website

    

    Reference website URL

    Completion

    Students must

    

    Mark as done
  • Select activity Students feedback(Week-1)

    

    Students feedback(Week-1) URL

    Completion

    Students must

    

    Mark as done
  • Select activity Reference Video:Click

    Completion

    Students must

    

    Mark as done

    Reference Video:

• Select section Week 2 : Review and Front-End technology(22th September 2020- 27th September 2020)

  Week 2 : Review and Front-End technology(22th September 2020- 27th September 2020)

  • Topics

  1. Testing methodologies
  2. Project discussion
  3. HTTP
  4. HTML(Part-1): Basic HTML

  • Learning Outcome

  1. Choose right Testing methodology
  2. Course Project team formation and discussion on deliverables
  3. Understand the HTTP and HTML5 elements

  • Lab Session 2: Working with HTML
    

  1. https://www.codecademy.com/catalog/language/html-css
  2. https://www.w3schools.com/html/

  • Select activity PDF: Basic HTML

    

    PDF: Basic HTML File

    Completion

    Students must

    

    Mark as done
  • Select activity PDF: Requirement Engineering

    

    PDF: Requirement Engineering File

    Completion

    Students must

    

    Mark as done
  • Select activity Pre-recorded Video Lecture:Lecture-4(Requirement E...

    Completion

    Students must

    

    Mark as done

    Pre-recorded Video Lecture:
    Lecture-4(Requirement Engineering)

  • Select activity Class Video Lecture:Lecture-3(Basic Html)Lecture-4...

    Completion

    Students must

    

    Mark as done

    Class Video Lecture:
    Lecture-3(Basic Html)
    Lecture-4(Requirement Engineering)

  • Select activity Additional resource on HTML practice

    

    Additional resource on HTML practice File

    Completion

    Students must

    

    Mark as done
  • Select activity Assignment on HTML

    

    Assignment on HTML

    Completion

    Students must

    

    Mark as done
  • Select activity Forum discussion on HTML

    

    Forum discussion on HTML

    Completion

    Students must

    

    Mark as done
  • Select activity Interactive quiz on HTML

    

    Interactive quiz on HTML Interactive Content

    Completion

    Students must

    

    Mark as done
  • Select activity Reference website

    

    Reference website URL

    Completion

    Students must

    

    Mark as done
  • Select activity Studnets feedback(Week-2)

    

    Studnets feedback(Week-2) URL

    Completion

    Students must

    

    Mark as done
  • Select activity Reference Video:Click

    Completion

    Students must

    

    Mark as done

    Reference Video:
    

• Select section Week 3: Discussion on HTML and CSS (28th september 2020-03rd October2020)

  Week 3: Discussion on HTML and CSS (28th september 2020-03rd October2020)

  • Topics 

  1. HTML(Part-2): HTML Elements
  2. CSS(Part-1): Different types of CSS
  3. Class Test-1

  • Learning Outcome

  1. Know basics of static web page
  2. Understand and apply HTML and CSS

  • Lab Session 3: Working with CSS
    

  1. https://www.w3schools.com/css/default.asp
     

  • Select activity PDF: Basic HTML part 2

    

    PDF: Basic HTML part 2 File

    Completion

    Students must

    

    Mark as done
  • Select activity PDF: Basic CSS

    

    PDF: Basic CSS File

    Completion

    Students must

    

    Mark as done
  • Select activity Pre-recorded Video Lecture:Lecture-5(Basic CSS)

    Completion

    Students must

    

    Mark as done

    Pre-recorded Video Lecture:
    Lecture-5(Basic CSS)

  • Select activity Class Video Lecture:Lecture-5(Basic HTML-part 2)Le...

    Completion

    Students must

    

    Mark as done

    Class Video Lecture:
    Lecture-5(Basic HTML-part 2)
    Lecture-6(Basic CSS)

  • Select activity Class content

    

    Class content File

    Completion

    Students must

    

    Mark as done
  • Select activity Additional resource

    

    Additional resource File

    Completion

    Students must

    

    Mark as done
  • Select activity Quiz-1

    

    Quiz-1

    Show more Show less

    Not available unless: The activity Assignment on Introduction about Web is marked complete ...

    Not available unless:

    • The activity Assignment on Introduction about Web is marked complete
    • The activity Forum discussion on Introduction about web apps. is marked complete
    • The activity Interactive contents on Introduction about web. is marked complete
    • The activity Forum discussion on HTML is marked complete
    • The activity Interactive quiz on HTML is marked complete
    • The activity Assignment on HTML is marked complete
  • Select activity Assignment on HTML and CSS

    

    Assignment on HTML and CSS

    Completion

    Students must

    

    Mark as done
  • Select activity Forum discussion on HTML and CSS

    

    Forum discussion on HTML and CSS

    Completion

    Students must

    

    Mark as done
  • Select activity Interactive quiz on HTML and CSS

    

    Interactive quiz on HTML and CSS Interactive Content

    Completion

    Students must

    

    Mark as done
  • Select activity Students feedback(Week-3)

    

    Students feedback(Week-3) URL

    Completion

    Students must

    

    Mark as done
  • Select activity Reference video:Click

    Completion

    Students must

    

    Mark as done

    Reference video:
    

• Select section Week 4: Adaptive Lesson and Layout(5th October 2020-13th october 2020)

  Week 4: Adaptive Lesson and Layout(5th October 2020-13th october 2020)

  • Topics 

  1. Practice lesson on basic HTML and CSS
  2. Layout  using <div> tag, Table , and CSS Box Model 

  • Learning Outcome

  1. Review and Self-Confidence building on Basic html, css
  2. Understand and Apply Layout to design pages efficiently

  • Lab Session 4: Creating Layout
    

  1. https://www.w3schools.com/css/css_website_layout.asp
     

  • Select activity Class Video Lecture:Lecture-7(CSS: Layout designin...

    Completion

    Students must

    

    Mark as done

    Class Video Lecture:
    Lecture-7(CSS: Layout designing)

  • Select activity Additional resource

    

    Additional resource File

    Completion

    Students must

    

    Mark as done
  • Select activity Assignment on layout designing

    

    Assignment on layout designing

    Completion

    Students must

    

    Mark as done
  • Select activity Forum discussion on CSS

    

    Forum discussion on CSS

    Completion

    Students must

    

    Mark as done
  • Select activity Reference websiteClick

    Completion

    Students must

    

    Mark as done

    Reference website
    

• Select section Week 5: Interactive Web with JavaScript and Forms(14th October 2020-)

  Week 5: Interactive Web with JavaScript and Forms(14th October 2020-)

  • Topics 

  1. JavaScripts  and JS Libraries
  2. DOM, Events
     
  3. Forms

  • Learning Outcome

  1. Understand and Apply JS
     
  2. Use DOM to manipulate your content
  3. Events and Forms

  • Lab Session 5: Working with JS
    

  1. https://www.w3schools.com/js/default.asp
  2. https://www.w3schools.com/html/html_forms.asp
  3. https://www.w3schools.com/js/js_htmldom.asp

  
  

  • Select activity Class Video Lecture:Lecture-7(Basic JavaScript)Lec...

    Completion

    Students must

    

    Mark as done

    Class Video Lecture:
    Lecture-7(Basic JavaScript)
    Lecture-8(DOM,Events,Forms)

  • Select activity Quiz -2

    

    Quiz -2

    Show more Show less

    Not available unless: The activity Assignment on HTML and CSS is marked complete ...

    Not available unless:

    • The activity Assignment on HTML and CSS is marked complete
    • The activity Forum discussion on HTML and CSS is marked complete
    • The activity Interactive quiz on HTML and CSS is marked complete
    • The activity Assignment on layout designing is marked complete
    • The activity Forum discussion on CSS is marked complete
  • Select activity Assignment on JavaScript DOM, Events

    

    Assignment on JavaScript DOM, Events

    Completion

    Students must

    

    Mark as done
  • Select activity Forum discussion on JavaScript DOM and Events

    

    Forum discussion on JavaScript DOM and Events

    Completion

    Students must

    

    Mark as done
  • Select activity Reference Video:Click

    Completion

    Students must

    

    Mark as done

    Reference Video:
    

• Select section Week 6: Discussion Review(25th October 2020-9th November 2020)

  Week 6: Discussion Review(25th October 2020-9th November 2020)

  • Topics 

  1. Review Exercise
     
  2. Discussion before Midterm Exam
  3. Class Test-2

  • Learning Outcome

  1. Practice Exercise
  2. Know Progress

  • Lab Session 6: Wrap-up front end technologies

  
  
• Select section Week 7 : Midterm Exam(10th November ,2020)

  Week 7 : Midterm Exam(10th November ,2020)

  Daffodil International University Department of Computer Science and Engineering MID TERM EXAM

  Topics for Midterm:
  

  1. Basic Terminologies
  2. Selecting appropriate Testing method
  3. Understanding Requirements (RE)
  4. Design a web page (Application of HTML, CSS and JS)

  • Select activity Mid-Exam

    

    Mid-Exam Assignment

    Completion

    Students must

    

    Mark as done

    Dear students,

    You need to download (1) QuestionPaper.pdf and (2) AnswerScriptTemplate.doc from the Mid-exam. You will type your answers in the answer script doc file or write on your paper, then capture the images and save them as pdf with your ID e.g. CSE417-PC-D-171-15-2345-mid.pdf (Course Code-Section-Student ID), and then upload in the following google form link:  https://forms.gle/M6TqHAa7PgELqK9z8

    
    

    
    

• Select section Week 8: Server Side Programming and PHP (15th November2020-17th November 2020)

  Week 8: Server Side Programming and PHP (15th November2020-17th November 2020)

  • Topics 

  1. Server Side Programming
  2. Basic PHP
  3. Work with forms, cookies, files, time and date.
  4. Create a basic checker for user-entered data.
     

  • Learning Outcome

  1. Know about  Server Side Programming
  2. PHP and its workings. 
  3. Implement different requirements/problems with PHP

  • Lab Session 7: Working with PHP
    

  1. https://www.w3schools.com/php/
     

  • Select activity PDF: Basic PHP

    

    PDF: Basic PHP File

    Completion

    Students must

    

    Mark as done
  • Select activity PDF: Basic PDF 2

    

    PDF: Basic PDF 2 File

    Completion

    Students must

    

    Mark as done
  • Select activity Class video Lecture:Lecture-15(Basic PHP)Lecture-1...

    Completion

    Students must

    

    Mark as done

    Class video Lecture:
    Lecture-15(Basic PHP)
    Lecture-16(Php form,Session,Cookies,Date)

  • Select activity Forum discussion on PHP

    

    Forum discussion on PHP

    Completion

    Students must

    

    Mark as done
  • Select activity Interactive quiz on PHP

    

    Interactive quiz on PHP Interactive Content

    Completion

    Students must

    

    Mark as done
  • Select activity Students Feedback(Week-8)

    

    Students Feedback(Week-8) URL

    Completion

    Students must

    

    Mark as done
  • Select activity Reference videoClick

    Completion

    Students must

    

    Mark as done

    Reference video
    

• Select section Week 9: Database Management (mySQL)[18th November 2020-]

  Week 9: Database Management (mySQL)[18th November 2020-]

  • Topics 

  1. Handling Database with mySQL and PHP

  • Learning Outcome

  1. Be able to access and create mySQL database
  2. CRUD operations
  3. Use mySQL with PHP

  • Lab Session 8: Working with mySQL and PHP
    

  1. https://www.w3schools.com/php/php_mysql_intro.asp
     

  • Select activity PDF: MySQL and PHP

    

    PDF: MySQL and PHP File

    Completion

    Students must

    

    Mark as done
  • Select activity Class Video LectureLecture-17(Basic MySQL )

    Completion

    Students must

    

    Mark as done

    Class Video Lecture
    Lecture-17(Basic MySQL )

  • Select activity Forum discussion on MySQL

    

    Forum discussion on MySQL

    Completion

    Students must

    

    Mark as done
  • Select activity Interactive quiz on MySQL

    

    Interactive quiz on MySQL Interactive Content

    Completion

    Students must

    

    Mark as done
  • Select activity Students Feedback

    

    Students Feedback URL

    Completion

    Students must

    

    Mark as done
  • Select activity Reference video:click

    Completion

    Students must

    

    Mark as done

    Reference video:
    

• Select section Week 10: Project Management and MVC(24 November2020- )

  Week 10: Project Management and MVC(24 November2020- )

  • Topics 

  1. Project management
  2. MVC design pattern
  3. Discuss course project

  • Learning Outcome

  1. Understand and apply MVC design pattern
  2. Understand Project management techniques

  • Lab Session 9: Front end and Back End integration
    

  1. Read here: https://vsupalov.com/how-backend-and-frontend-communicate/
  2. https://www.geeksforgeeks.org/frontend-vs-backend/
     

  • Select activity PDF: Project Management

    

    PDF: Project Management File

    Completion

    Students must

    

    Mark as done
  • Select activity PDF: MVC design Pattern

    

    PDF: MVC design Pattern File

    Completion

    Students must

    

    Mark as done
  • Select activity Class video LectureLecture-19(Project Management)L...

    Completion

    Students must

    

    Mark as done

    Class video Lecture
    Lecture-19(Project Management)
    Lecture-20(MVC design pattern)

  • Select activity Assignment on Project Management

    

    Assignment on Project Management

    Completion

    Students must

    

    Mark as done
  • Select activity Interactive quiz on MVC and Project management

    

    Interactive quiz on MVC and Project management Interactive Content

    Completion

    Students must

    

    Mark as done
  • Select activity Additional resources

    

    Additional resources URL

    Completion

    Students must

    

    Mark as done
  • Select activity Students Feedback(Week-10)

    

    Students Feedback(Week-10) URL

    Completion

    Students must

    

    Mark as done
  • Select activity Reference VideoClick

    Completion

    Students must

    

    Mark as done

    Reference Video
    

• Select section Week 11: Review Discussion and Adaptive Lesson on PHP(December 2020)

  Week 11: Review Discussion and Adaptive Lesson on PHP(December 2020)

  • Topics 

  1. Review Discussion
  2. Class Test#3

  • Learning Outcome

  1. Review Exercise on PHP
     
  2. Self Confidence building on PHP

  • Lab Session 10: Project integration and presentation
    

  1. https://www.wikihow.com/Creatively-Present-a-Project
     

  • Select activity Assignment on PHP and MySQL

    

    Assignment on PHP and MySQL

    Completion

    Students must

    

    Mark as done
  • Select activity Presentation Submission link

    

    Presentation Submission link URL

    Completion

    Students must

    

    Mark as done
  • Select activity Reference video:&nbsp;Click

    Completion

    Students must

    

    Mark as done

    Reference video: 
    

• Select section Week 12: Discussion on Other Technologies and Presentation(16th August 2020-26th August2020)

  Week 12: Discussion on Other Technologies and Presentation(16th August 2020-26th August2020)

  •  Topics 

  1. Discussion on other technologies.ie, JSON, XML, AJax  etc.
  2. Review exercise
  3. Presentation

  • Learning Outcome

  1. Analysing web technologies
  2. Know usefulness of different emerging technologies

  • Lab Session 11: Project integration and presentation
    

  1. https://www.brightwork.com/blog/7-steps-effective-report-writing
     
  2. https://www.ieee.org/conferences/publishing/templates.html
     

  • Select activity PDF: Ajax,Json

    

    PDF: Ajax,Json File

    Completion

    Students must

    

    Mark as done
  • Select activity Class Video Lecture:Lecture-(AJAX,JSON,XML)

    Completion

    Students must

    

    Mark as done

    Class Video Lecture:
    Lecture-(AJAX,JSON,XML)

  • Select activity Forum discussion on JSON

    

    Forum discussion on JSON

    Completion

    Students must

    

    Mark as done
  • Select activity Interactive quiz on JSON,XML

    

    Interactive quiz on JSON,XML Interactive Content

    Completion

    Students must

    

    Mark as done
  • Select activity Reference Video:click

    Completion

    Students must

    

    Mark as done

    Reference Video:
    

  • Select activity Quiz-3

    

    Quiz-3

    Show more Show less

    Not available unless: The activity Forum discussion on PHP is marked complete ...

    Not available unless:

    • The activity Forum discussion on PHP is marked complete
    • The activity Interactive quiz on PHP is marked complete
    • The activity Forum discussion on MySQL is marked complete
    • The activity Assignment on Project Management is marked complete
    • The activity Interactive quiz on MySQL is marked complete
    • The activity Interactive quiz on MVC and Project management is marked complete
    • The activity Forum discussion on JSON is marked complete
    • The activity Interactive quiz on JSON,XML is marked complete
    • The activity Assignment on PHP and MySQL is marked complete
• Select section Week 13(24 December,2020)

  Week 13(24 December,2020)

  Daffodil International University Department of Computer Science and Engineering FINAL EXAM

  
  Topics for Final:
  

  1. Application of Front end and back end programming
  2. Design pattern and Project Management
  3. Basic about emerging technologies

  • Select activity Final Assessment

    

    Final Assessment Assignment

    Completion

    Students must

    

    Mark as done

    Dear students,

    You need to download (1) QuestionPaper.pdf and (2) AnswerScriptTemplate.doc from the final assessment. You will type your answers in the answer script doc file or write on your paper, then capture the images and save as pdf with your ID e.g. CSE417-PC-D-171-15-2345-final.pdf (Course Code-Section-Student ID) and then upload in the following google form link:  https://forms.gle/PW3ayGH2uwEccvCp9

    
    
    

• Select section Topic 14

  Topic 14
• Select section Topic 15

  Topic 15
• Select section Topic 16

  Topic 16
• Select section Topic 17

  Topic 17
• Select section Topic 18

  Topic 18
• Select section Topic 19

  Topic 19
• Select section Topic 20

  Topic 20
• Select section Topic 21

  Topic 21
• Select section Topic 22

  Topic 22
• Select section Topic 23

  Topic 23
• Select section Topic 24

  Topic 24
• Select section Topic 25

  Topic 25
• Select section Topic 26

  Topic 26
• Select section Topic 27

  Topic 27
• Select section Topic 28

  Topic 28
• Select section Topic 29

  Topic 29
• Select section Topic 30

  Topic 30
• Select section Topic 31

  Topic 31
• Select section Topic 32

  Topic 32
• Select section Topic 33

  Topic 33
• Select section Topic 34

  Topic 34
• Select section Topic 35

  Topic 35
• Select section Topic 36

  Topic 36
• Select section Topic 37

  Topic 37
• Select section Topic 38

  Topic 38
• Select section Topic 39

  Topic 39
• Select section Topic 40

  Topic 40
• Select section Topic 41

  Topic 41
• Select section Topic 42

  Topic 42
• Select section Topic 43

  Topic 43
• Select section Topic 44

  Topic 44
• Select section Topic 45

  Topic 45
• Select section Topic 46

  Topic 46
• Select section Topic 47

  Topic 47
• Select section Topic 48

  Topic 48
• Select section Topic 49

  Topic 49
• Select section Topic 50

  Topic 50