@book{40147,
	author = {Azcuénaga Linaza, Luis María,},
	title = {Certificación en seguridad y salud de las empresas contratistas y subcontratistas /},
	publisher = {FC Editorial,},
	year = {[2012]},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/37880/}
}