@book{38984,
	author = {Calvo y Madroño, Ismael.},
	title = {Los poderes del estado },
	editor = {Calvo y Madroño, Ismael)},
	publisher = {[s.n.], },
	year = {1891 (},
	address = {Madrid : },
	url = {http://bdh-rd.bne.es/viewer.vm?id=0000045436&page=1 }
}