@book{1645,
	author = {Escamilla López, Ofelia. and Solís Córdova, María Soledad.},
	title = {Comportamiento de bovinos productores de leche en pastoreo en México},
	publisher = {El autor,},
	year = {1990},
	address = {Chapingo, Méx. :},
	note = {42-169}
}