@book{31230,
	author = {Colegio Politécnico (Madrid) and Colegio Politécnico (Madrid)},
	title = {Colegio Politécnico, calle Hortaleza, núm. 81 : },
	editor = {Imp. de Anselmo Santa Coloma)},
	publisher = {[s.n.], },
	year = {1855 (},
	address = {Madrid : }
}