@book{3714,
	author = {Parsons, David B.  and Parsons, David B.},
	title = {Papas },
	publisher = {Trillas ,},
	year = {2010.},
	series = {Manuales para educación agropecuaria. Producción vegetal ; },
	address = {México, D.F. :},
	edition = {2a ed.}
}