@book{59501,
	author = {Biarnés, Anne and Colin, Jean-Philippe and Colegio de Postgraduados. Montecillo, Méx.},
	title = {Agroeconomía de la papa en México},
	publisher = {Colegio de Postgraduados,},
	year = {1995},
	address = {México, D. F. :}
}