TY  - BOOK
AU  - Parten,Mildred
TI  - Surveys, polls, and samples: practical procedures 
U1  - 300.723 20
PY  - 1950/// [Reprinted 1965]
CY  - New York
PB  - Harper
KW  - Social surveys
KW  - Public opinion polls
N1  - Bibliography: p. 537-602; Includes index
ER  -