TY  - BOOK
AU  - Cochran, William G.
TI  - Sampling techniques
T2  - A Wiley Publication in Applied Statistics
U1  - 311.213.2 L7 
PY  - 1977///
CY  - New Delhi
PB  - Wiley Eastern
KW  - G. William Cochran
KW  - Sampling(Statistics)
ER  -