@book{13308,
	author = {Gartrell, Jack E. and Crowder, Jane.},
	title = {Earth :},
	publisher = {National Science Teachers Association,},
	year = {c1992.},
	address = {Arlington, Va. :},
	edition = {Rev. ed.},
	note = {A joint project of Horizon Research, Inc., and the American Geological Institute. }
}