TY  - BOOK
AU  -  Akhtar, Ahsan
AU  -  Ahsan, Sabiha
TI  - Textbook of differential calculus
SN  - 8120324420
U1  - 515.3 
PY  - 2004///
CY  - New Delhi : 
PB  - PHI
KW  - Differential calculus
KW  - Partial Differentiation
N1  - Include Index
ER  -