00412nam a2200157Ia 4500008004100000020001400041084001400055100002300069245004300092250002000135260001900155260000900174260002200183300001400205500003500219180424s9999    xx            000 0 und d  a137742401  a301.16 S6  a"Stempel, Guido H" 0aResearch Methods in Mass Communication  a\\198100ENGGPSX  aPrentice Hall   b1981  cEnglewood Cliffs   aviii+405p  aincludes index and biblioraphy