TY  - BOOK
AU  - Singh, Daroga
AU  - Chaudhary, F.S.
TI  - Theory and analysis of sample survey designs
SN  - 0 85226 910 2
U1  - 519.52 S 64 T 
PY  - 1989///
CY  - New Delhi
PB  - Wiley eastern
KW  - Survey
ER  -