TY  - BOOK
AU  - Frederick F. Stephan.
AU  - Philip J. McCrathy
TI  - Sampling options: : an analysis of survey procedure
U1  - 519.52 STE-S 1950 
PY  - 1958///
CY  - New York
PB  - John Wiley & sons
KW  - Sampling
KW  - Methods
KW  - Concept
N1  - Part I: The nature and role of sampling; Some general questions about sampling
ER  -