000 00333nam a2200133Ia 4500
100 _aDavison, W. Phillips; Boylan, James & Yu, Frederick .T.C.
020 _a0-03-052481-4
250 _a2nd Ed
942 _cBK
245 _aMass media systems and effects
260 _aHolt, New York
_c1982
082 _a384 Dav
300 _ax, 264
999 _c35571
_d35571