(3GdLGeYI GdYQHjI hJShjI GdefGRYGJ GdeMdjI (B/s - (3HWQS HWQS ZGdjs ((3GdbGgQI (B:s (3eYgO GdHMhK hGdOQGSGJ GdYQHjI,s, 1977)
. 203-191 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdfRGY Hjf GdOhds -- (3JShjIs