Coddington, Earl A., 1920- Theory of ordinary differential equations/ Earl A. Coddington and Norman Levinson. - New York: McGraw-Hill, 1955. - 429 p.: illus.; 24 cm. - International series in pure and applied mathematics. . LCCN: 54011260 /L Nat. Bib. No.: GB55-8993 Subjects--Topical Terms: Differential equations.Ordinary Differential Equations Dewey Class. No.: 515.352 / C669t