(3bVGjG GdJHYjI GdGYdGejI hGdKbGajI ai GdYGde GdKGdK (B((3YGde GdeYQaI (B78) / s - (3YhGWa YHOGdQMefs ([S.N] : (3OGQ GdacQ GdYQHi , s, 1987)
Keywords: (3GdOhd GdfGejIs; (3GdYdGbGJ GdNGQLjIs; (3GdGYdGes; (3GdOYGjIs; (3GdGYdGe GdOhdis; (3GdQGi GdYGe GdYGdeis