@book{3936,
	author = {Strahler, Alan H. and Strahler, Arthur Newell,},
	title = {Physical geography :},
	publisher = {John Wiley,},
	year = {c1997.},
	address = {New York :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/onix04/96018934.html}
}