Reddick, Harry W. Differential equations / Harry W. Reddick and Donald E. Kibbey. - 3rd ed. - New York : John Wiley, c 1957. - ix, 304 p. : ill. ; 22 cm. Includes index. 337 337 Subjects--Topical Terms: Differential equations. Dewey Class. No.: 517.38 / R246d