@book{65621,
	author = {Koeslag, Johan H.},
	title = {Porcinos},
	publisher = {Trillas,},
	year = {1989 [c. 1982]},
	series = {Manuales para educación agropecuaria. Producción animal},
	address = {México :},
	note = {1992/83}
}