:

  •  
                                                          

    ( . 1922)

    ( . 1922)

    . ( 1969). 20 . : " 1917-1956 ." (1959), " " (1968), "" (1972), " . 60- ." (1977) .

    - ( . - )
    (1460-1506)
    ( . 1921)

    ( . 1933)
    :