(3GdELQGAGJ GdLfGFjI GdebGQfI hGdfXGe GdGLQGFj aj GdeedcI GdYQHjI GdSYhOjI (B/s - (3GMeO YhV HdGd s ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI(B,s, 1990)
. 1216-1185(3HHdjhLQGajG(B: (3UaMGJ(B.s
(3GdfU CZdHg HGddZI GdYQHjI HYV GdfUhU GdEfLdjRjI hGdaQfSjIs
Keywords: (3bGfhf GdELQGAGJ GdLfGFjIs