@book{78422,
	author = {Erenstein, Olaf C.A.},
	title = {Are productivity enhancing, resource conserving technologies a viable "win-win" approach in the tropics :},
	note = {Sobretiro de : Lockerete, W. ed. Environmental enhancement through agriculture.-- Medford, Massachusetts : Tufts University. School of Nutrition Science and Policy, 1996. pp. 313-322}
}