Elemtary

Basic group theory Bhatti, Zahid Rafiq Elementary differential equations Bhatti, Zahid Rafiq An introduction to integral equations Bhatti, Zahid Rafiq Ordinary differential equations Prof. Dr. Nawazish Ali Shah Elementary differential equations and boundary value problems Boyce, William E. A course in ordinary differential equations Wirkus, Stephen A. Ordinary and partial differential equations Raisinghania, M. D. Solution of initial-value problems using fourth order multi-step methods Kalim-ul-Haq Tariq