TY  - BOOK
AU  - Ahsan Akhtar and Sabiha Ahsan
TI  - Text Book of Differential Calculus
SN  - 81-203-2442-0
U1  - 515.3   Akh.P4 
PY  - 2005///
CY  - New Delhi
PB  - Prentice Hall of India
ER  -