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. h329dl2Tv8qJ7WWYlf8o8qwWu3CK1M0zEuXwOBrn00JCmfs+oS49lXf67O6SBnm3