TY  - BOOK
AU  - Bhalla,G.S
AU  - Narula,D.D
AU  - Mahmood,Aslam
TI  - Elementary Statistics: A Textbook On Economics For Class XI
U1  - 310 
PY  - 1977///
CY  - New Delhi
PB  - National Council of Education Research & Training
KW  - Collections of general statistics
ER  -