Lewis, W. Arthur 1915- The principles of economic planning / [by] W. Arthur Lewis. - New York : Harper & Row, c1969 [reprined 1971] - xxviii, 7-128 p. 21 cm. - Harper torchbooks, TB 1436 . Reprint of the 1949 ed. with new introd. Subjects--Topical Terms: Economic policy. Dewey Class. No.: 338.9 / LEP 1971