00271nam a22001097a 4500008004100000020001500041050001600056100003200072245003600104250001100140260001000151160302b        xxu||||| |||| 00| 0 eng d  a0205307531  aP90.V582000  aJohn Vivian Peter J. Maurin  aThe Media of Mass Communication  a2ND ED  c20000