@book{50220,
	author = {Pimentel Bribiesca, Luis.},
	title = {La preparación manual del terreno con fines forestales},
	publisher = {El autor,},
	year = {1987},
	series = {Serie de Apoyo Académico},
	address = {Chapingo, Méx. :},
	note = {c.5-10 en bodega}
}