There are many sites/blogs/forums on net which provides free ebooks. But some ebooks are not available free. Here i provide all offical websites where one can find latest chemical related ebooks....
If u want to find whether your book is available in electronic format or not, u can find here...but it covers some ebook sites which associated with library not all...
http://www.worldcat.org/advancedsearch
Here is a some ebook sites.http://www.ebooks.com/
http://www.crcnetbase.com/products.asp
http://www.sciencedirect.com/
http://www3.interscience.wiley.com
http://www.informaworld.com/smpp/home~db=all
http://www.springerlink.com/home/main.mpx
http://www.rsc.org/Publishing/index.asp
http://www.coursesmart.com/disciplines?category
http://www.knovel.com/web/portal/browse
http://shop.ebrary.com/
https://ebooks.primisonline.com/eBookstore/
http://www.gale.cengage.com/
http://ebooks.worldscinet.com
There are many good ebooks, but all r not free....
so hav u bought ebook ?
share your experience here...hope u like it...thx