@book{42015,
	author = {Casas Santasusana, Enrique.},
	title = {La moderna ciencia de la venta / },
	publisher = {Afrodisio Aguado, },
	year = {1950.},
	series = {Técnica Comercial Moderna ; },
	address = {Madrid : },
	note = {Es el tomo I.}
}