Due, John F. International economic analysis : resource allocation, factor, pricing, and welfare / John F. Due and Robert W. Clower. - 4th ed. - Illnois : Richard D. Irwin, 1961. - 545 p. ; 24 cm. - The Irwin series in economics. . Includes index. 300 300 Dewey Class. No.: 330 / D8681