00509nam a2200193 a 450000500170000002000150001708200180003210000060005011000230005624500410007926000330012030000190015369000150017271000170018796400210020499700120022599900150023795200630025220251203090512.0  a0582285550  a302.234,bimp  d_  aHiebert, Ray Eldon  aImpact of mass media: current issues  aLoNew Delhion: Longmanc1985  axx,515p.c22cm  aMass media  aReuss, Carol  bEngcdefgPUL  a21508 C  c9884d9884  00104070aPUbPUd1998-04-08l0o302.234, impp21508yBK