TY  - BOOK
AU  - Hansen,Morris H
AU  -  Hurwitz,William N.
AU  -  Madow,William G.
TI  - Sample survey methods and theory
U1  - 519.5 
PY  - 1964///
CY  - New York
PB  - Wiley & sons
KW  - Statistics
N1  - Include index
ER  -