TY  - BOOK
AU  - Cochron G. William 
TI  - Sampling Techniques
SN  - 0852261217
AV  - QA 276.5 .C6 1977  
PY  - 1977///
CY  - New Delhi
PB  - Wiley Eastern Limited
KW  - Simple Random Sampling
N1  - Includes Index
ER  -