(3ePcQGJ aj GdJQHjI GdESdGejI (B/ s - (3GdMGQKj, YHO GdhgGH CHh UajIs ((3YeGf (B:s (3GdeDda,s, 1989)
Keywords: (3GdJQHjIs; (3GdHdOGf GdYQHjIs; (3GdJQHjI GdESdGejIs; (3JGQjN GdJQHjIs