00393nam a2200133Ia 4500008004100000082001400041100002000055245004600075260004700121300000800168650004800176650002000224653001500244170901s1965    xx            000 0 und d  a384bS23P  aSchramm, Wilbur 0aProcess and Effects of Mass Communication  aUrbanabUniversity of illinois Pressc1965  a586  aCommerce, communications and Transportation  aSocial sciences  aMass media