TY  - BOOK
AU  - Cochran,William G.
TI  - Sampling techniques
SN  - 0-471-16240-X
U1  - 001.422 C663 1977 
PY  - 1977///
CY  - New York
PB  - John Wiley & Sons
KW  - Sampling (Statistics)
N1  - Includes references and indices
ER  -