(3hLhH GdJKHJ aj GdQhGjI (B/s - (3GdbQjhJj, YGUe Hf YHO Gddg Hf EHQGgjes ((3GdeOjfI GdefhQI (B:s (3ecJHI GHf GdLhRj,s, 1987)
Keywords: (3GdMOjKs -- (3ESfGOs; (3GdMOjKs -- (3QhGjIs