00648nam a2200193 a 45000010005000000030005000050050017000100080041000270200015000680400020000831000031001032450099001342600028002334900031002616500040002929420013003329990015003459520094003603593CDMR20131024125413.0130130s1989||||||||||||||||||||||||||||d  a0333423660  aCDMRbcatcCDMR1 aLewis, Peter Michael9256214aThe invisible mediumb: public, commercial and community radiocPeter M. Lewis and Jerry Booth  aLondonc1989bMacmillan0 aCommunications and culture049596aRàdioxGestió d´emissores  cMON2udc  c3593d3593  00104070aCDMRbCDMRd2013-01-16l0oEa /11pCDMR13107979Pr2013-01-16w2013-01-16yMON