00254nam a2200109Ia 4500008004100000040002500041082001600066100001800082245002700100260000900127300000800136230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a303.4 C7672  a3G E-Learning 4aThe Contemporary World  c2018  a196