@book{176936,
	author = {Strahler, Alan H. and Strahler, Arthur Newell,},
	title = {Physical geography :},
	publisher = {Wiley,},
	year = {c2002.},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/bios/wiley042/00054554.html}
}