1. White Plague, Black Labor: Tuberculosis in the Political Economy of Health and Disease in South Africa;Packard,1989
2. Black Mineworkers in Central Africa;Perrings,1979
3. Black Mineworkers in Central Africa;Perrings,1979
4. Black Mineworkers in Central Africa;Perrings,1979
5. Black Mineworkers in Central Africa;Perrings,1979