PIAGGIO, H.T.H. An elementary treatise on differential equations and their applications / [by] H.T.H. Piaggio - 1st Indian ed. - New Delhi. CBS pub. 2004 - xviii, 256, xxviii p. Includes index. ISBN: 8123909098 Subjects--Topical Terms: Differential equations Dewey Class. No.: 515.35 / PIA