TY  - BOOK
AU  - William G. Cochran
TI  - Sampling techniques
U1  - 519.52 
PY  - 1953///
CY  - New York
PB  - John Wiley and Sons Inc
N1  - William G. Cochran: Sampling techniques.  New York.  John Wiley and Sons Inc, 1953.--(519.52COC)
ER  -