@book{98075,
	author = {Alvarado Ontiveros, Erick},
	title = {Análisis económico del abastecimiento sustentable de madera de pino para dos empresas forestales en Durango, Durango},
	publisher = {El autor,},
	year = {2009},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/109732.pdf}
}