@book{16775,
	author = {Chancellor, R. J. and Heras Cobo, Luis},
	title = {Identificación de plántulas de malas hierbas /},
	publisher = {Acribia,},
	year = {1964.},
	series = {Manuales de técnica agropecuaria / FAO ;},
	address = {Zaragoza :}
}