00377nam a2200157Ia 45000010005000000080041000050200018000460400013000640820020000771000021000972450059001182600009001773000011001865460007001976500015002047075140321s9999    xx            000 0 und d  a0-13-559246-1  cPK-LaUMT  a 302.234bBIT-M  aBittner, John R.  aMass communication : An introductioncBittner, John R.  c1986  a468 p.  aEN  aMass media