JUGLAR, Clement (1819-1905). Du Change et de la Libertie d' Emission. Paris: Guillaumin et CIE, 1868. (Staining to first 22-pages, occasional light spotting). Original olive/blue wrappers ( browned with some staining). FIRST EDITION. Juglar was the first economist to develop a theory of 'business cycles', to one of which he gave his name. With 2 other works of related interest, namely William Roscher's Principles of Political Economy (New York, 1878, 2 vols.) and James Taylor's A View of the Money System of England (London, 1828). (4)