TY  - GEN
AU  - Chakravarthi, I.M.
AU  - Laha, R.G.
AU  - Roy, J
TI  - Hand book of methods of applied statistics V.2 planning of surveys and experimetns
U1  - 519.50 2 CHA 
CY  - NewYork, John Wiley & Sons INC
KW  - Applied statistics/ sample selection/ sample survey - estimation
ER  -