@book{89098,
	author = {Schroth, G. and ebrary, Inc.},
	title = {Trees, crops, and soil fertility},
	publisher = {CABI Pub.,},
	year = {c2003.},
	address = {Wallingford, Oxon, UK ;},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10060559}
}