00270nam a2200097Ia 4500008004100000082001500041100002200056245005400078260003100132300000900163210430s9999    xx            000 0 und d  a070 G184 I  aMICHAEL W. GAMBLE  aIntroducing mass communicationcMICHAEL W. GAMBLE  aNew yorkbMc Gamble.c1986  a549p