@book{148,
	author = {Puerto Rico. and Rodr/'iguez, Jos/'e Ram/'on, ed.},
	title = {Leyes relativas a contribuciones sobre ingresos de Puerto Rico, 1917-1944.},
	publisher = {International Trade Institute},
	year = {1944.},
	address = {Ponce},
	edition = {Ed. de 1944}
}