00389nam a2200145Ia 4500008004100000020001800041040002500059082003100084082000900115100002000124245004700144250000800191260003600199490000800235240730s9999    xx            000 0 und d  a9781680956788  aNORSU-GuicNORSU-Gui  aCir.302.231/Le46s/2018/c.1  b4155  a3G E - Learning 0aSocial media internet for telecom industry  ac.1  aNew Yorkb3G E - Learningc2018  vc.1