@book{31328,
	author = {Urrutia, Manuel Ma.},
	title = {Evolución del pensamiento político de Unamuno /},
	publisher = {Universidad de Deusto,},
	year = {1997.},
	series = {Serie Letras ;},
	address = {Bilbao :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/17590/}
}