TY  - BOOK
AU  - Scheaffer,Richard L.
AU  - Mendenhall,William
AU  - Ott,Lyman
TI  - Elementary survey sampling
SN  - 053492185X
U1  - 519.52 23
PY  - 1990///
CY  - Boston
PB  - PWS-Kent Publishing
KW  - Statistics
KW  - Estadística
ER  -