TY  - BOOK
AU  - Gupta, P. P and Malik, G. S. 
TI  - Calculus of finite difference and numerical analysis: a cours on numerical methods 
SN  - NA
AV  - 3463 
U1  - 515.62 22
PY  - 2001///
CY  - New Delhi
PB  - Krishna Prakashan Media
ER  -