@book{77173,
	author = {Hernández Sánchez, Josafat. and Valdés Narvaez, Victor Manuel.},
	title = {Comportamiento productivo de corderos en engorda intensiva utilizando Zeranol o monensina y su efecto coccidiostato},
	publisher = {El autor,},
	year = {1999.},
	address = {Chapingo, Méx. :}
}