The principles of economic planning : a study prepared for the Fabian Society / W. Arthur Lewis Lewis, W. Arthur (William Arthur), 1915- Fabian Society (Great Britain) Economic policy. HD82.L415 330.9 LEP Imprint on label mounted on t.p.: London, Allen & Unwin. London : D. Dobson, 1949. 1949. 1949 Text 128 p ; eng