This is what you really want for science books and conference proceedings books : - https://booksc.org/ - http://libgen.rs/ - http://libgen.is/ - http://libgen.st/ - https://libgen.fun/ - https://libgen.lc/ - https://libgen.pw/ - http://libgen.lc/pictures/ - https://www.reddit.com/r/libgen/ - https://www.reddit.com/r/scihub/wiki/index#wiki_official_sci-hub_mirrors - https://sci-hub.do/ - https://sci-hub.st/ - https://sci-hub.se/ - http://bookfi.net/ - https://b-ok.cc/ - http://twitter.com/Sci_Hub - http://facebook.com/sci.hub.org - http://engineuring.wordpress.com/ **ENJOY!** beware: 15% of the PDFs have zero day exploits added into them, so use a virtual machine and a non-adobe pdf reader.