Grewal, B.S. Higher engineering mathematics [Book]. B.S. Grewal and J.S. Grewal - Thirtynineth edition. - Delhi : Khanna Publishers, 2005. - xi, 1276 Pages : 24 cm. Includes Appendix and Index. All ISBN: 8174091955 Subjects--Topical Terms: Differential equationsMathematics Dewey Class. No.: 510