Author: A. Young, 1997 (Second Edition)
Publisher: CAB International, New York, New York and ICRAF, Nairobi, Kenya ISBN: 0-85199-189-0.
Now in a revised second edition, this book presents a synthesis of evidence from agriculture, forestry, and soil science, drawing on over 700 published sources dating largely from the 1990's. Very well written and accessible to practitioners and academics. Highly recommended.