London:: John Murray, 1821., 1821. 8vo. xii, 538 pp. Occasional foxing. Original paper-backed boards, printed paper spine label; spine rebacked with kozo, spine label chipped (a remnant) all extremities worn. Rubber-ownership stamp of Henry R. Wagner. Binding needs work; internally very good. Third edition of this classic work on political economics. This edition includes his chapter "On Machinery," which reconsidered the role of labor and the effect machines had on the labor force. ". . .in Ricardo's view, it is a choice between the potential for detrimental effects on labor from the use of new machinery versus even worse effects if the machinery is not used at all. His argument can certainly be questioned, at least in some places, but this is not the positive "lift all boats" theory of growth that is often attributed to Ricardo." – Sunday, September 16, 2012, Mark Thoma, [see: Economist's viewpoint]. "If I have to hire a labourer for a week, and instead of ten shillings…