Derrick, William R. Elementary differential equations with applications / William R. Derrick, Stanley I. Grossman. - Reading, Mass. : Addison-Wesley Pub. Co., c1976. - x, 537, [60] p. : ill. ; 24 cm. - Addison-Wesley series in mathematics . Includes index. LCCN: 75012094 Subjects--Topical Terms: Differential equations. LC Class. No.: QA371 QA371 / .D43 / .D47 Dewey Class. No.: 515/.35