@book{155382,
	author = {Hertling, Georg Freiherr von. and Heinz, Luis.},
	title = {Política social / },
	publisher = {Saturnino Calleja Fernández, },
	year = {[191-?]},
	series = {Ciencia y Acción. Estudios Sociales},
	address = {Madrid : }
}