00398cam a22001337a 4500 180718b1950 xxu||||| |||| 00| 0 eng d I5513 P258 Parten, Mildred Bernice Surveys, polls, and samples: practical procedures by Mildred Bernice Parten New York Harper 1950 624p. Public opinion polls Social surveys 501732 501732 0 0 0 0 IIPA IIPA 2018-08-04 I5513 P258 GR925 2018-08-04 2018-08-04 GR