@book{81432,
	author = {Hupka, Josef. and Sancho Seral, Luis.},
	title = {La representación voluntaria en los negocios jurídicos / },
	editor = {Imp. Helénica)},
	publisher = {Librería General de Victoriano Suárez, },
	year = {1930 (},
	address = {Madrid : }
}