WORKS CITED American Iron and Steel Institute. Annual Statistical Report. Philadelphia: American Iron and Steel Institute, 1944. . The Competitive Challenge to Steel. New York: American Iron and Steel Institute, 1963. "Andalusia." Encyclopaedia Britannica, 1971, I. Barger, Harold, and Schurr, Sam H. The Mining Industries, 1899-19391 A Study of Output, Employment and Pro ductivity. New York: National Bureau of Economic Research, Inc., 1944. Barnett, Harold J. and Morse, Chandler. Scarcity and Growth, The Economics of Natural Resource Availability. Baltimore: Johns Hopkins Press for Resources for the Future, Inc., 1963. Bettelheim, Charles. Planification et Croissance accelere. Paris: Francoismaspero, 1967. Boulding, Kenneth E. "Fun and Games with the Gross National Product." The Environmental Crises. Edited by Harold V. Helfrich. New Haven: Yale University Press, 1970. Burns, Arthur F. Production Trends in the United States Since 187O. New York: National Bureau of Economic Research, Inc., 1934. Bury, J. B. The Idea of Progress: An Inquiry into Its Origin and Growth. Introduction by Charles A. Beard. New York: Dover Publications, Inc., 1955. Cairncross, A. K. "Investment in Canada, I9OO-I3.w The Export of Capital from Britain 1870-1914. Edited by A. R. Hall. Debates in Economic History. General Editor Peter Mathias. London: Methuen & Co., Ltd., 1968. Clark, Victor S. History of Manufactures in the United States. Vol. III. New York: McGraw-Hill Book Company, 1929. Condit, Carl W. "Buildings and Construction." Technology in Western Civilization, The Emergence of Modern Industrial Society Earliest Times to 1900. Edited by Melvin Kranzberg and Carroll W. Pursell, Jr. Vol. I. London: Oxford University Press, 1967. 203