@book{75290,
	author = {Gregor, Howard F. and Rodríguez Lajo, L.},
	title = {Geografía de la agricultura / },
	publisher = {Vicens-Vives, },
	year = {[1973]},
	series = {Biblioteca básica de geografía económica},
	address = {[Barcelona] : },
	edition = {[1ª ed.].}
}