@book{150515,
	author = {Menéndez Valdés, Mariano.},
	title = {Importancia y necesidades de la industria carbonera de Asturias /},
	editor = {Imprenta de Aurelio J. Alaria)},
	publisher = {[s.n.], },
	year = {1877 (},
	address = {Madrid : },
	url = {http://bdh-rd.bne.es/viewer.vm?id=0000077363&page=1 }
}