@book{100285,
	author = {Paz Robles, J Ascención. and Sánchez del Real, Carlos},
	title = {Estudio económico de engorda de ovinos en pastoreo de praderas mixtas},
	publisher = {El autor,},
	year = {2010.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/111944.pdf}
}