Roger Louis and Jean Stengers, Oxford, Clarendon Press, 1968 (includes Morel and the Congo Reform Association, 1904–1913, by W. R. Louis and Morel and Belgium, by J. Stengers).
Roger Louis and Jean Stengers, Oxford, Clarendon Press, 1968 (includes Morel and the Congo Reform Association, 1904–1913, by W. R. Louis and Morel and Belgium, by J. Stengers).