:

  •  
                                                          

    ( 50 ):

    (Oberhausen)
    (Oberhof)

















    ( . obligatus - )
    ( . obligatio - )
    ( . obliteratio - )

    (1907-71)







    ()


    ( . 1931)




    (1851-1919)
    (1888-1962)

    ( .)





    ()

    (Banach) (1892-1945)
    ( 1940 )
    ( . 1939)
    ""

    :