@book{72846,
	author = {Gabler, Robert E. and Petersen, James F.},
	title = {Essentials of physical geography /},
	publisher = {Thomson Brooks/Cole,},
	year = {c2007.},
	address = {Belmont, CA :},
	edition = {8th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy1104/2005938850-b.html}
}