TY  - BOOK
AU  - Cochran,William Gemmell
TI  - Sampling techniques 
T2  - Wiley series in probability and mathematical statistics
SN  - 047116240X
U1  - 001.4/222 
PY  - 1977///
CY  - New York
PB  - Wiley
KW  - Sampling (Statistics)
N1  - Simple random sampling;
Sampling for proportions and percentages;
The estimation of sample size;
Stratified random sampling;
Further aspects stratified random sampling;
Ratio estimators;
Regression estimators;
Systematic sampling;
Single-stage cluster sampling;
Subsampling with units of equal size;
Subsampling with units of unequal size;
Double sampling;
Sources of error in surveys

ER  -