Walras, Leon, 1834-1910. Elements of pure economics or the theory of social wealth / Leon Walras ; [translated by William Jaffe]. - London : Routledge, 2003. - 620 p. : ill. ; 23 cm. - Routledge Library Editions - Economics. . - Routledge library editions - Economics . Transferred to digital printing 2007. Includes index. ISBN: 9780415313407 0415313406 Subjects--Topical Terms: Economics.Economics, Mathematical.