TY  - BOOK
AU  - Singh,Daroga
AU  - Chaudhary,F.S..
TI  - Theory and analysis of sample survey designs / 
SN  - 0852269102
U1  - 519.52 
PY  - 1986/// (rep. 1995)
CY  - New Delhi : 
PB  - New Age International , 
KW  - SAMPLING (STATISTICS)
N1  - NULL
ER  -