@book{53547,
	author = {Fabra, Nilo María, and Castelar, Emilio,},
	title = {El problema social / },
	editor = {Est. tip. "Sucesores de Rivadeneyra")},
	publisher = {Librería de Fernando Fé, },
	year = {1892 (},
	address = {Madrid : },
	edition = {2ª ed. }
}