@book{23738,
	author = {Ortega y Gasset, José, and Trillo-Figueroa, Federico,},
	title = {España invertebrada : },
	publisher = {Espasa-Calpe,},
	year = {2006},
	address = {Madrid :},
	edition = {2a edición},
	url = {http://www.loc.gov/catdir/enhancements/fy1111/2007482066-b.html}
}