(3eTcdI GdMUGfI GdbVGFjI hGdMUGfI VO GdJfajP ai GdbGfhf GdOhdi GdNGU GdebGQf (B/s - (3YHO GdMcje eUWaj YHO GdQMefs ((3GdbGgQI (B:s (3ecJHI GdfUQ,s, 1991)
316-326 (3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdeMGce GdOhdjIs; (3GdbGfhf GdOhdj GdYGes