@book{40047,
	author = {Martínez Pascual, Juan Ramón,},
	title = {Trabajos en altura :},
	publisher = {FC Editorial,},
	year = {[2012]},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/37765/}
}