@book{14993,
	author = {Hernández Xolocotzi, Efraím.},
	title = {Recursos naturales renovables de México; los pastos.},
	publisher = {ENA. Depto. de Economía Agrícola,},
	year = {1978.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/x16032.pdf}
}