@book{743425,
	author = {World Book, Inc.},
	title = {The natural world./},
	publisher = {World Book, Inc.,},
	year = {c2008.},
	series = {Explore and learn ;},
	address = {Chicago, IL :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/ecip088/2008001367.html}
}