TY  - BOOK
AU  - Scheaffer, Richard L.
AU  - Mendenhall, William.
AU  - Ott, Lyman.
TI  - Elementary Survey Sampling
SN  - 0871509431
U1  - 519.52 
PY  - 1986///
CY  - Boston
PB  - Duxbury Press
ER  -