TY  - BOOK
AU  - Cochran, William G.  .
TI  - Sampling techniques / 
SN  - 9971-51-271-8
U1  - B281 
PY  - 1977///
CY  - New York : 
PB  - John Wiley & Sons, Inc. , 
KW  - Mathematics-Sampling
ER  -