TY  - BOOK
AU  - Hansen,Morris H.
TI  - Sample survey methods and theory: Theory
T2  - Wiley publications in statistics
U1  - 519.5 
PY  - 1964///
CY  - New York
PB  - Wiley
KW  - Sampling (Statistics)
N1  - Includes bibliographical references and index
ER  -