@book{28543,
	author = {Barrett, Christopher B. and International Centre for Research in Agroforestry.},
	title = {Livestock farming systems :},
	publisher = {CABI Pub. in association with the International Centre for Research in Agroforestry,},
	year = {c2002.},
	address = {Wallingford, Oxon, UK ;},
	url = {http://www.loc.gov/catdir/toc/fy033/2001043833.html}
}