OF THE CAUSES OF IMPROVEMENT IN THE PRODUCTIVE POWERS OF LABOUR, AND OF THE ORDER ACCORDING TO WHICH ITS PRODUCE IS NATURALLY DISTRIBUTED AMONG THE DIFFERENT RANKS OF THE PEOPLE. vW08kBP1lrvXz701GjgmRE5zeZwfiET3AYqG7zq4zQLQaF2awVoIHwWdB7PRCpZh