TY  - BOOK
AU  - MILDRED PARTEN
TI  - SURVEYS, POLLS, AND SAMPLES: PRACTICAL PROCEDURES
U1  - GN 309 P 258 S 
PY  - 1950///
CY  - NEW YORK
PB  - HARPER & BROTHERS
KW  - SURVEYS, POLLS, AND SAMPLES: PRACTICAL PROCEDURES
N1  - MODERN BOOK HOUSE
ER  -