00389nam a2200133Ia 4500008004100000082001800041100002000059245005300079260005100132300000800183650002000191653002500211653001900236170901s1950    xx            000 0 und d  a300.723bP19S  aParten, Mildred 0aSurveys, Polls and SamplesbPractical Procedures  aNew YorkbHarper and Brothers Publishersc1950  a624  aSocial sciences  aPublic opinion polls  aSocial surveys