TY  - BOOK
AU  - Mendenhall,William
AU  - Ott,Lyman
AU  - Scheaffer,Richard L.
TI  - Elementary survey sampling / 
U1  - 001.433 MEN 
PY  - 1971///
CY  - Belmont, Calif. : 
PB  - Wadsworth Pub. Co. , 
KW  - Sampling (Statistics)
ER  -