00403nam a2200145   450000100060000000300030000600500170000900800410002603500190006703500180008605000190010410000210012324500890014426000240023325785UR20220427180612.0061103|||||||||||||||||||||||||||||||| d  a(janium) 25774  a(janium)25772 4aP90b.B57 19771 aBittner, John R.10aMass communicationb : an introduction: theory and practice of mass media in society  bPrentice Hallc1977