00537nam a2200181Ia 4500008004100000040001900041041001200060082002400072100002600096245005400122250001100176260003100187300003800218504004900256650001200305651001800317850002000335131103s9999    xx            000 0 und d  aLoreto College  aEnglish  a551.4/THObLCBKB/78  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