00314nam a2200121Ia 4500008004000000020001800040082001600058100002100074245004800095250000500143260003600148300000800184210210b1987   xxu||||| |||| 00| 0 eng d  a0 8039 8070 1  a302.23 MCQM  aMcQUAIL (Denis).  aMass communication theory: An introduction.  a  aLondonbSage Publicationsc1987  a352