Strahler, Alan Physical geography: Science and systems of the human environment/ Alan Strahler, Arthur Strahler. - Third edition. - New Jersey: John Wiley and Sons, 2005. - xxii, 749p: col. ill.; 29 cm. Includes index ISBN: 9780471657644 Subjects--Topical Terms: Physical geography LC Class. No.: GB54.5 / STR 2005