TY  - BOOK
AU  - Ahsan, Zafar
TI  - Differential equations and their applications
U1  - 515.35 A76D(2) 
PY  - 2013///
CY  - Delhi
PB  - PHI Learning
N1  - 62 15/01/2014 5647 03/02/2014 Mathematics (NBHM)
ER  -