TY  - BOOK
AU  - Chanda,S.C.
AU  - Nag , N.K.
TI  - Commercial Arithetic And Elements Of Statistics 
SN  - 8176635499
U1  - 513  
PY  - 1990///
CY  - New Delhi 
PB  - Kalyani Publishing 
KW  - English
ER  -