@book{6138,
	author = {Lemke, Karen A. and Ritter, Michael E.},
	title = {Physical geography laboratory manual /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2009.},
	address = {Boston :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy1116/2008277006-d.html}
}