Coddington, Earl A., 1920- An introduction to ordinary differential equations / Early A. Coddington. - Englewood Cliffs, N.J. : Prentice-Hall, 1961. - xi, 292 p. : ill. ; 24 cm. - Prentice-Hall mathematics series . Includes bibliography. LCCN: 61015333 Subjects--Topical Terms: Differential equations.