TY  - BOOK
AU  - Cochran,William G.
TI  - Sampling Techniques
SN  - 0-85226-121-7
U1  - 001.422 COC 
PY  - 1992///
CY  - India
PB  - Wiley Eastern Limited
KW  - Sampling Theory-Statistics,Simple Random Sampling,Ratio Estimators
ER  -