00737cam a2200229 a 45000010005000000030003000050050017000080080041000250200015000660350018000810350017000990500020001161000021001362450085001572500012002422600044002543000028002984900059003266500033003856500056004187000033004745686UR20220428111931.0970228c    1997usaa    r     00100 eng d  a0534244742  a(janium) 5675  a(janium)5675 4aP91.3b.W5 199410aWimmer, Roger D.10aMass media researchb : an introduction/c/ Roger D. Wimmer, Joseph R. Dominick.  a5th ed.0 aBelmont California bWadsworth  c1997.  a498 p.b: il.c; 24 cm.  aWadsworth series in mass communication and journalism. 4aComunicaciónxMETODOLOGIA. 4aMedios de comunicación de masasxInvestigaciones.10aDominick, Joseph R.e,coaut.