TY  - BOOK
AU  - Cochran, William G.
AU  - 
TI  - Sampling techniques
U1  - 519.243 
PY  - 1977///
CY  - New Delhi
PB  - Wiley Eastern
KW  - Probability
KW  - Statistics
KW  - Census
KW  - Probabilities
KW  - Mathematics
KW  - Number theory
KW  - Set theory
KW  - Group theory
KW  - Mathematical sciences
ER  -