@book{74678,
	author = {Herrero Herrero, César, and Losada Otero, Manuel,},
	title = {El progreso verdadero :},
	publisher = {Dykinson, S.L.,},
	year = {2018.},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/54659/}
}