@book{2829,
	author = {Hyndman, Donald W.},
	title = {Petrology of Igneous and Metamorphic Rocks},
	publisher = {McGraw-Hill,},
	year = {1972.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0070316570/chopaconline-20}
}