What are the best math problems books?

[KCL]

Books with problems and solutions, ones that simply go into problem solving in general, that kind of stuff.

All I know are the Schaum's stuff and the Kaplan Exam Files which are awesome but don't cover advanced material.

Thanks in advance for any info.

 

[coomast]

REA's problem solver. I know they have books on physics, but there might be some available on math as well. Try to google on it.

Another useful link on finding books is the following one:

http://www.libraryofmath.com/shop/