00320nam a2200109Ia 4500008004100000040003800041100002500079245003000104260004100134300001700175653001800192211217s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aScheidegger,Adrian E 0aTheoretical geomorphology  bGeorge Allen and UnwinaLondonc1970  axiii,435p p.  aGeomorphology