@book{137986,
	author = {Vanlauwe, B. and ebrary, Inc.},
	title = {Integrated plant nutrient management in Sub-Saharan Africa},
	publisher = {CABI Pub. in association with the International Institute of Tropical Agriculture,},
	year = {c2002.},
	address = {Wallingford, Oxon, UK ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10173501}
}