TY  - BOOK
AU  - Davis James A
TI  - Elementary survey analysis
T2  - Prentice-Hall Methods of social Science Series. Ed  by Herbert L Costner and Neil Smalser
U1  - B2817, L1 
PY  - 1971///
CY  - NJ
PB  - Prentice-Hall          
KW  - Sampling Mathematics
N1  - Appendixes P 188-92
ER  -