@book{82877,
	author = {Guzmán, Juan Ignacio,},
	title = {Fundamentos de economía minera /},
	publisher = {Editorial Reverté,},
	year = {[2019]},
	address = {Barcelona :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/67970/}
}