?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Xiao%2C+P.&rft.aulast=Xiao&rft.aufirst=P.&rft.issue=9&rft.volume=72&rft.date=September+1999&rft.issn=0016-7444&rft.atitle=Changes+in+grain+production+in+China+since+1949+and+major+reasons&rft.title=Geographical+Review+of+Japan%2C+Series+A&rft.pages=589-599&rft.genre=article