@book{89699,
	author = {Sampayo Maldonado, Salvador},
	title = {Programa de manejo forestal sustentable para la comunidad de San Miguel Topilejo Delegación Tlalpan, D.F. /},
	publisher = {El autor,},
	year = {2004.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/101228.pdf}
}