@book{29490,
	author = {Bergström, L.},
	title = {Carbon and nutrient dynamics in natural and agricultural tropical ecosystems /},
	publisher = {Cab International,},
	year = {c1998.},
	address = {Wallingford, Oxon, UK ;},
	note = {The product of a symposium held at the University of Zimbabwe in May 1996.},
	url = {http://www.loc.gov/catdir/enhancements/fy0604/97033649-d.html}
}