   ( 国富论 )
                                          ( An Inquiry into the Nature and Causes of the Wealth of Nations )  
      1776                            
                                                      
        http://www.amazon.cn/s/ref=nb_ss?ie=UTF8&keywords=%E5%9B%BD%E5%AF%8C%E8%AE% BA&tag=baidhydrcn-23&index=aps&hvadid=285894094&ref=pd_sl_25hjx1a2nu_e