Lewis, W. Arthur 1915- The principles of economic planning: a study prepared for the Fabian Society [by] W. Arthur Lewis. - 3rd ed., with a new introduction. - London, Allen & Unwin, 1969. - xii, 128 p. 22 cm. - Unwin university books, 11 . ISBN: 0043301371 Subjects--Topical Terms: Economic policy. LC Class. No.: HD82 / .L415 1969b