@book{6693,
	author = {Christian, Spencer. and Felix, Antonia.},
	title = {What makes the Grand Canyon grand? :},
	publisher = {Wiley,},
	year = {c1998.},
	series = {Spencer Christian's world of wonders},
	address = {New York :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/bios/wiley041/97029470.html}
}