@book{26406,
	author = {Strahler, Alan H. and Strahler, Arthur Newell,},
	title = {Modern physical geography /},
	publisher = {Wiley,},
	year = {c1992.},
	address = {New York :},
	edition = {4th ed.},
	note = {Includes  Index.  },
	url = {http://www.loc.gov/catdir/description/wiley032/91027551.html}
}