Ross, Shepley L. Introduction to Ordinary differential Equations / Shepley L. Ross, with the assistance of Shepley L. Ross, II. - Fourth edition - xi, 609 pages : illustration ; 24 cm. Includes index. Bibliography: page [558]. ISBN: 0471098817 LCCN: 88021589 Subjects--Topical Terms: Differential equations. LC Class. No.: QA372 / .R815 1989 Dewey Class. No.: 515.3/52