Strahler, Alan H. Physical geography : science and systems of the human environment / Alan Strahler, Arthur Strahler - 3rd ed. - New York : John Wiley & Sons, c2005 - xxii, 794 p. : ill. (some col.), col. maps ; 29 cm. Includes glossary and index ISBN: 0471480533 Subjects--Topical Terms: Physical geography