( )



:

?


(1894-1972)

- " (1894-1972)"

(Zanstra) (1894-1972), . (1926) , ( ) (1950) .


:
""
"-"
" (. 1715-62 1724-63)" - ...
" (. 1910)"
""
"-"
""
""
"" - ...
""
""