TY  - BOOK
AU  - Tryfos,Peter
TI  - Sampling methods for applied research: text and cases 
SN  - 9780471047278
AV  - QA276.6 .T78 1996
PB  - New York, Wiley and Sons, INC, c1996.
KW  - Sampling (Statistics)
N1  - Includes bibliographical references (p. 434-436) and index
ER  -