@book{21960,
	author = {Killmann, Wulf and Organización de las Naciones Unidas para la Alimentación y la Agricultura. FAO},
	title = {Reduced impact logging in tropical forests :},
	publisher = {FAO,},
	year = {2004.},
	series = {Forest Harvesting and Engineering- Working Paper},
	address = {Roma :}
}