00323nam a2200121Ia 4500008004100000020001800041040002500059082001700084100001900101245003800120260003300158300001000191240301s9999    xx            000 0 und d  a9781680954234  aNORSU-BaycNORSU-Bay  a338.4791 A77  a3G E-Learning  0aInternational Travel and Tourism   aUSAb3G E-learning LLCc2017  a224p.