@book{105686,
	author = {Velázquez de Castro González, Federico,},
	title = {El medio ambiente /},
	publisher = {Editorial Popular,},
	year = {[2019]},
	series = {[Qué sabes de...]},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/155638/}
}