TY  - BOOK
AU  - MANGAT, Naurang Singh
TI  - Some alternative estimators for Rao, Hartley and Cochran's scheme
U1  - T 519.52 M29S 
PY  - 1975///
CY  - Ludhiana
PB  - P.A.U
KW  - SAMPLING (STATISTICS)
ER  -