        20                                                                                                 20                           

       1.      Washington University     1881                             1949                                                                                                                             1955  1956                                                                                                                     1951                                                                                                                                                                           
       2.     Columbia University                     1940               1948        1953         1958                                                                                                                                                             

       3.     Indiana University                                                                                                                      150         30                                                                                                  1962                                                                        

      4.     Harvard University                         1937                                                                                                                                                                          1500  1800           1928                                           1952                Script Mongolia                                                                1935                              1946  1961           F.Cleaves  14    15                                                   1989                                                                          1989   1990                                    