@book{53042,
	author = {Jones, Thomas D. and Stofan, Ellen Renee},
	title = {Planetology :},
	publisher = {National Geographic,},
	year = {c2008},
	address = {Washington, D.C. :},
	url = {http://www.loc.gov/catdir/toc/ecip0813/2008010726.html}
}