@book{381,
	author = {krauskopf, konrad.},
	title = {Introduction to geochemistry /},
	publisher = {McGraw-Hill,},
	year = {1967.},
	address = {[S.l.] :},
	edition = {First Edition.},
	note = {Import.},
	url = {http://www.amazon.com/exec/obidos/ASIN/007035443X/chopaconline-20}
}