00669cam a2200193 a 4500008004100000010001400041020001500055040003200070050002300102100002100125245008300146250001200229260005100241300003700292490004300329504005300372650002600425700002400451210928s1991    caub     bf   001 0 eng d  a 90012647  a0534139620  aDLC c DLC d DLCcEG-GiCUC  aP91.3 b .W47 19911 aWimmer, Roger D.10aMass media research :ban introduction /cRoger D. Wimmer, Joseph R. Dominick.  a3rd ed.  aBelmont, Calif. :bWadsworth Pub. Co., c1991.  axv, 478 p. : b ill. ; c 25 cm.0 aWadsworth series in mass communication  aIncludes bibliographical references and indexes. 0aMass mediaxResearch.1 aDominick, Joseph R.