TY  - BOOK
AU  - Hansen,Morris H.
AU  - Hurwitz,William N.
AU  - Madow,William G.
TI  - Sample survey methods and theory
U1  -  519.93 
PY  - 1953///]
CY  - New York
PB  - Wiley
KW  - Sampling (Statistics)
N1  - Vol. 1 Methods and Applications.?v.2 Theory
ER  -