Derrick, William R. Elementary differential equations with applications / William R. Derrick, Stanley I. Grossman. - 2d ed. - Reading, Mass. : Addison-Wesley Pub. Co., c1981. - 606 p. in various pagings : ill. ; 25 cm. Includes index. ISBN: 0201031620 LCCN: 80022057 Subjects--Topical Terms: Differential equations. LC Class. No.: QA371 QA371 / .D43 1981 / .D43 Dewey Class. No.: 515/.35