@book{16220,
	author = {Gutiérrez Cotro, Antonio. and Estirado Gómez, Fernando.},
	title = {Principales plagas del chopo.},
	publisher = {Ministerio de Agricultura,},
	year = {1978.},
	series = {Ministerio de Agricultura. Hojas divulgadoras},
	address = {(Madrid) :}
}