After you have cruised the Library offerings and have an idea of which books suit your needs Abe in particular, and Better World to a lesser extent usually will have copies of the various editions available at a nicely reasonable prices.


Abe Books
http://www.abebooks.com/?cm_mmc=ggl-...FcU-MgodfjcAow

Better wold Books
http://www.betterworldbooks.com/

Best
George