@book{3097,
	author = {Puyol, Rafael and Estebanez, José},
	title = {Geografía humana},
	publisher = {Cátedra},
	year = {1992},
	address = {Madrid :},
	edition = {2a. ed},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/L85507.jpg}
}