00374nam a2200097Ia 4500008004100000050002200041110002200063245006400085247008300149264004400232230508s2018    xx            000 0 und d  aHF 5415 S63s 20182 a3G E-learning LLC10aSocial media and internet for banquet /c3G E-learning LLC.  aSocial media and internet for banquet_HF 5415 S63s 2018_3G E-learning LLC_2018  aNew York : b3G E-Learning LLC, c2018.