@book{440,
	author = {Levin, Harold L. and Smith, Michael S.},
	title = {Laboratory studies in earth history /},
	publisher = {McGraw-Hill,},
	year = {c2008.},
	address = {Boston :},
	edition = {9th ed.},
	note = {Previous eds. by James C. Brice and Harold L. Levin.},
	url = {http://www.loc.gov/catdir/enhancements/fy1013/2010459405-d.html}
}