TY  - BOOK
AU  - William G. CoChran
TI  - Sampling techniques
SN  - 9971-51-271-8
U1  - 519.52 
PY  - 2002///
CY  - New York
PB  - John Wiley and Sons
N1  - William G. CoChran: Sampling techniques.  New York.  John Wiley and Sons, 2002. 9971-51-271-8--(519.52COC)
ER  -