00493nam a2200169 a 450000500170000002000150001708200160003210000200004824500300006826000340009830000210013269000440015396400220019799700180021999900170023795200690025420251203110228.0  a0745621325  a302.23bLUH  aLuhmann, Niklas  aReality of the Mass media  aCambridgebPolity pressc2000  a154p.c22cm. PB.  aSocial science-Mass media communication  bENGcd302efg_  a99601 LIBSS C  c82432d82432  00104070aPUbPUd2001-04-04g834.78l0o302.23 LUHp99601yBK