Coddington , Earl A. Theory of ordinary differential equations / By Earl A Coddington, Norman Levinson. - 1st Ed. - New Delh : Mc Graw Hill Education(India) Private Limited, 2019. - xii, 429 p. ; 00 cm. ISBN: 9780070992566 Subjects--Topical Terms: MATHEMATICS. Dewey Class. No.: 517.38 / COD