@book{666,
	author = {Philpotts, Anthony R. and Ague, Jay A.},
	title = {Principles of igneous and metamorphic petrology},
	publisher = {Cambridge University Press,},
	year = {2009},
	address = {Cambridge :},
	edition = {Second editión},
	url = {https://itmsp.museknowledge.com/UOH?qurl=https://libros-uoh.uoh.cl/ESCUELADEINGENIERIA/INGENIERIA%2520CIVIL%2520GEOLOGICA/Principles-of-Igneous-and-Metamorphic-Petrology}
}