TY  - BOOK
AU  - Bhalla, G.S. .
AU  - Narula, D.D. .
AU  - Mahmood, Aslam .
TI  - Elementary Statistics
U1  - 311.2 
PY  - 1989///
CY  - New Delhi
PB  - NCERT
KW  - Statistics
KW  - G-Statistics
ER  -