@book{14709,
	author = {Hernández Xolocotzi, Efraím.},
	title = {Apuntes de geobotánica.},
	publisher = {ENA. Depto. de Economía Agrícola,},
	year = {1978.},
	series = {Serie},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/x15748.pdf}
}