Boyce, William E. Elementary differential equations and boundary value problems [by] William E. Boyce and Richard C. Di Prima. - 2d ed. - xiv, 533, A-43, I-8 p. illus. 24 cm. Bibliography: p. 533. ISBN: 0471093319 LCCN: 69016043 Subjects--Topical Terms: Differential equations.Boundary value problems. Dewey Class. No.: 517.35 / B789