00538nam a2200181Ia 4500008004100000040001900041041001200060082002500072100002600097245005400123250001100177260003100188300003800219504004900257650001200306651001800318850002000336131103s9999    xx            000 0 und d  aLoreto College  aEnglish  a551.4/THObLCBkB/524  aThornbury , William D  aPrinciples of geomorphologycWilliam D. Thornbury  a2nd ed  aNewYorkbJohn Willeyc1954  aix , 594p.b ill. figuresc 20cm.  aIncludes bibliograpical references and index  aGeology  aGeomorphology  aLCBkB/551.4/THO