Can any one figure me out webs from where I can download complete books in pdf format for free?

Subjects: Wildlife, Ecology, Wetlands, English Literature and Philosophy. I v heard few people upload such books as well. How can I find out those links?Can any one figure me out webs from where I can download complete books in pdf format for free?
For older books, published before 1923, start with:





http://www.gutenberg.org


http://manybooks.net


http://www.munseys.com


http://www.webliterature.net





Then do a search for ';free e-books'; and you will find many more links.





Newer books are still under copyright protection, so you will have a much harder time finding free e-book versions.


Can any one figure me out webs from where I can download complete books in pdf format for free?
Some free in copyright e-books here: http://newfreebooks.com Some Philosophy but mostly fiction.