Websites - Books(PDF)

1) https://www.pdfdrive.com

2) Electronic library. Download books free. Finding books (b-ok.asia)

3) https://www.pdfbooksworld.com/

4) http://www.gutenberg.org/

5) https://snewd.com/ebooks/

6) Internet Archive: Digital Library of Free & Borrowable Books, Movies, Music & Wayback Machine

7) https://libgen.is/

8) http://pahar.in/

9)