(3GdefGRYGJ GdOhdjI (B/ s - (3LGHQ EHQGgje GdQGhis ((3HZOGO (B:s (3eWHYI OGQ GdSdGe,s, 1978)
. 311-303 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdfRGY Hjf GdOhds; (3GdbGfhf GdOhdj GdYGes