Strahler, Alan Physcial geography : science and systems of the human environment Alan Strahler and Arthur Strahler - 2nd ed. - New York: John Wiley, 2002. - xx, 750p. PB Includes index Eng ISBN: 9971514133 Subjects--Topical Terms: Physcial gegrophy Dewey Class. No.: 910.02 / STP