-
- ..
 
arrow arrow - arrow
   

. . . 1931, 1941 . . . . , . ( . ), . . : "-" . , " " "볺 " . , " " . , " " . . , " " . ˳, " " . , " " . , "³ ..." . . (1981): . . . ( 1978 ), . . , . . . ( 1980).

..