Economics.by B. W. Knight; L. G. Hines;Introduction to Economics.by T. Morgan;Fundamentals of Economics.by M. H. Umbreit; E. F. Hunt; C. V. Kinter;General Economics: An Introduction.by A. M. Sievers;An Introduction to Political Economy.by V. W. Bladen; Alison Kemp;Man, Money and Goods.by J. S. Gambs;Fundamentals of Economics.by J. K. Mehta;A Textbook of Economic Theory.by A. W. Stonier; D. C. Hague