@book{23906,
	author = {Haberler, Gottfried. and Perpiña Grau, Román},
	title = {El comercio internacional},
	publisher = {Labor,},
	year = {1936},
	address = {Barcelona :},
	note = {Apéndice de economía hispana, por Román Perpiña Grau, p. 415-487}
}