The physical basis of geography; an outline of geomorphology, by S. W. Wooldridge ... and R. S. Morgan ... Geomorphology. Wooldridge, Sidney William. Morgan, Ralph Sisk, joint author. Geology. Physical geography. QE26 .W6 551 19 WOP "Bibliographic notes": p. 429-435. London, New York [etc.] Longmans, Green and Co. [1937] [1937] 1937 Text xxi, 445 p. : eng The university geographical series