Handbook of Prebiotics
http://www.amazon.co.uk/Handbook-Prebiotics-Glenn-R-Gibson/dp/0849381711
Prebiotics and Probiotics
http://www.amazon.co.uk/Prebiotics-Probiotics-Dr-Anthony-Fraunhofer/dp/1479304727/ref=sr_1_1?s=books&ie=UTF8&qid=1354492328&sr=1-1
Direct-Fed Microbials and Prebiotics for Animals
http://www.amazon.co.uk/Direct-Fed-Microbials-Prebiotics-Animals-Mechanisms/dp/1461413109/ref=sr_1_1?s=books&ie=UTF8&qid=1354492438&sr=1-1