@book{139973,
	author = {Schmidt, Robert. and Giesberts, J.},
	title = {La acción social obrera en Alemania / },
	publisher = {Unión de Libreros Alemanes, },
	year = {[191_?]},
	series = {Lo que es Alemania ; },
	address = {Buenos Aires : },
	edition = {4ª ed.}
}