(3GdGdJRGe HGdeWGHbI ai YbO GdHjY GdOhdi ddHVGFY (B/s - (3LeGd eMehO YHO GdYRjR (B.s ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1997)
Keywords: (3GdbGfhf GdJLGQi(B. s; (3GdYbhO GdOhdjI (B.s; (3YbO GdHjY GdOhdi (B.s; (3GdGdJRGe ai GdYbhO GdOhdjI (B. s