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. h9Zdz4o2ZsKGVccojRz2wXJFVpfSk/gmxsmzPcjaS8IQgHKvpoOiQrf4oKx35PsT