@book{270,
	author = {Cova Natera, José Luis},
	title = {Biomateriales dentales para una odontología restauradora exitosa /},
	publisher = {Amolca,},
	year = {2020.},
	address = {Caracas :},
	edition = {3a. ed.},
	url = { https://online.amolca.com}
}