Lewis, W. Arthur 1915-1991. The principles of economic planning: a study prepared for the Fabian Society/ W. Arthur Lewis - NEW EDITION. - London: UNWIN UNIVERSITY BOOKS, [1949] - 128 p. 22 cm. Imprint on label mounted on t. p.: London, Allen & Unwin. Subjects--Topical Terms: Economic policy. Dewey Class. No.: 338.9 / LEP 1965