@book{447,
	author = {Palacio, Ernesto},
	title = {Historia de la Argentina : 1515 - 1957},
	publisher = {A. Peña Lillo, },
	year = {1957.},
	address = {Buenos Aires : },
	edition = {2a ed.},
	note = {El ejemplar 2 es 3a ed.  de 1960.}
}