@INBOOK {KANG:1990b,
title = {Agroforestry systems for sustained crop production in the tropics, with special reference to West Africa},
author = {Kang, B. and Van Den Beldt, R. J. },
year = {1990},
type = {American Society of Agronomy Annual Meeting, International Agronomy Section, 28-29 Nov. 1988, Anaheim, California. Edited by E. Moore},
pages = {13--33},
publisher = {Nitrogen Fixing Tree Association},
address = {Waimanalo, Hawaii, USA},
}