TY  - GEN
AU  - Hansen, Morris H
AU  - Hurwitz, William N
AU  - Madow, Willaim G
TI  - Sample Survey Methods and Theory. Vol 1: Methods and Applications
U1  - 001.433 
PY  - 1953///
CY  - New York
PB  - John Wiley & Sons Inc
KW  - Surveying
KW  - Sampling
ER  -