Lewis, W. Arthur 1915- The principles of economic planning : a study prepared for the Fabian Society / W. Arthur Lewis. - 3rd ed., with a new introduction. - London : Allen & Unwin, 1969. - xii, 128 p. - Unwin university books ; 11 . ISBN: 0043301371 Subjects--Topical Terms: Economic policy. Dewey Class. No.: 338.9 / L677