(3GdTQYjI GdOhdjI hCReI GdNdjL ef GdZRh Edi GdJMQjQ (B/s - (3eMeO agje OQhjTs ((3GdbGgQI (B:s (3GdRgQGA ddEYdGe GdYQHi,s, 1991)
. 213 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdfRGY Hjf GdOhds; (3GdbGfhf GdOhdj GdYGes