TY  - BOOK
AU  - DEV Parkash
TI  - Investigation into the relative efficiency of equal allocation in stratification on auxiliary variable
U1  - T 519.1 D37I 
PY  - 1971///
CY  - Ludhiana
PB  - P.A.U
KW  - PROBABILITIES
KW  - SAMPLING (STATISTICS)
ER  -