TY  - BOOK
AU  - COCHRAN G.WILLIAM
TI  - Sampling Techniques
SN  - 9788126515240
AV  - QA 276.5 .C6 2011  
PY  - 1993///.
CY  - India
PB  -  Wiley Eastern
KW  - _Simple Random Sampling
N1  - Includes Index
ER  -