Mongolia's socialist history historiography : a sketch -- 1921-1924 theocratic monarchy and revolution in Mongolia -- 1925-1928 the birth of the Mongolian People's Republic -- 1929-1932 old and new Mongolian terror -- 1933-1939 between Russian communism and Japanese militarism -- 1940-1945 the Mongolian arad and the Second World War -- 1946-1952 social nomadism