TY  - JOUR
AU  - M.P. Singh
TI  - On the Efficiency of Systematic Sampling in Ratio and Product Estimation
JO  - Metrika
PY  - 1967
SP  - 199
EP  - 205
VL  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MET_1967__11_175333/
ID  - MET_1967__11_175333
ER  -