@book{44475,
	author = {Darwin, Charles, and Burkhardt, Frederick,},
	title = {Las cartas del Beagle /},
	publisher = {Fondo de Cultura Económica,},
	year = {2015.},
	series = {Tezontle.},
	address = {México, D.F. :},
	edition = {Primera edición electrónica.},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/43645/}
}