@book{105308,
	author = {Engels, Friedrich, and Engels, Friedrich,},
	title = {El papel del trabajo en la transformación del mono en hombre /},
	publisher = {Ediciones Espartaco,},
	year = {[2017]},
	address = {[Santiago, Chile] :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/144359/}
}