@book{15018,
	author = {Michelena y Rojas, Francisco},
	title = {Viajes científicos en todo el mundo :},
	publisher = {I. Boix,},
	year = {1843},
	address = {Madrid :},
	url = {http://books.google.com/books?vid=BNC:1001960988&printsec=frontcover}
}