(3GdESJYeGQ aj GdbQf GdYTQjf (B/s - (3MSjf YHO GdMejO CMeOs ((3GdEScfOQjI (B:s (3GdgjFI GdeUQjI GdYGeI ddcJGH,s, 1975)
. 176-172 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdfRGY Hjf GdOhds; (3GdbGfhf GdOhdj GdYGes