@book{87400,
	author = {Espinosa Villeda, Alma Neri.},
	title = {Manejo químico de maleza en soya forrajera, Glycine wightii (Wight & Arn.) verde, como cobertura viva en Chapingo, Méx.},
	publisher = {El autor,},
	year = {2002.},
	address = {Chapingo, Méx. :}
}