TY  - BOOK
AU  - "Hansen, H. Morris"
TI  - Sample survey methods and theory Vol.1. methods and applications
T2  - Wiley series in probability and mathematical statistics
U1  - 311.213.2 J3.1 
PB  - "New York : John Wiley & sons, 1953"
KW  - "Hurwitz, N. William"
KW  - Sample survey methods
ER  -