首页 / 官方藏书 / The rise, progress, and phases of human slavery / How it came into the world and how it shall be made to go out / CHAPTER VIII. EXPLOITATION-VALUE OF SLAVE AND FREE LABOUR.
首页 / 官方藏书 / The rise, progress, and phases of human slavery / How it came into the world and how it shall be made to go out / CHAPTER VIII. EXPLOITATION-VALUE OF SLAVE AND FREE LABOUR.