TY  - BOOK
AU  - Tryfos 
TI  - Sampling methods for applied research : text and cases 
SN  - 0471047279 
U1  - 519.52 TRY 1996 
PY  - 1996///
CY  - New York
PB  - John Wiley & Sons
KW  - Sampling (Statistics)
N1  - Includes bibliographical references and index
ER  -