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. RPHoIWuDeXIgmN+MNzWbM3DX4qAigwtG462ZecY2poGhIuAnruzZO2U3xIIbcxZS