000 00317nam a2200133Ia 4500
008 190927s9999 xx 000 0 und d
082 _a302.23 V838 2005
100 _aVivian, John
245 0 _aMedia of mass communication, electronic chapters
260 _a2065
260 _b49
260 _c2005
942 _cGENREF
999 _c7974
_d7974