Here are the links to the different language PDF versions of the Managing Bioveristy in Agroecosytesm.
The English version of the book is only available commercially (http://www.cup.columbia.edu/book/978-0-231-13648-8/managing-biodiversity-in-agricultural-ecosystems).
Managing Biodiversity in Agricultural Ecosystems-ArabicChinese: ftp://DADnet:Mobile45@ext-ftp.fao.org/ag/reserved/dad-net/Managing_agrobiodiversity_C.pdf (4 MB)
French: ftp://DADnet:Mobile45@ext-ftp.fao.org/ag/reserved/dad-net/Biodiversidad_F.pdf (4 MB)
Spanish: ftp://DADnet:Mobile45@ext-ftp.fao.org/ag/reserved/dad-net/Biodiversidad_S.pdf (3.6 MB)