@book{78415,
	author = {Buckles, Daniel. and Erenstein, Olaf C.A.},
	title = {Intensifying maize-based cropping systems in the Sierra de Santa Marta, Veracruz},
	publisher = {Centro Internacional de Mejoramiento de Maíz y Trigo,},
	year = {1996.},
	series = {Documento},
	address = {México, D.F. :}
}