(3GdeSDhdjI GdJCOjHjI ddehXa GdYGe (B: s (3OQGSI ebGQfI dCfXeI GdJCOjH aj GdCQOf h ShQjG h eUQ h aQfSG (B/ s - (3GdYJhe, efUhQ EHQGgjes ((3YeGf (B:s (3eWHYI GdTQb hecJHJgG,s, 1984)
Keywords: (3GdEOGQI GdYGeIs; (3GdbGfhf GdEOQGjs; (3GdehXahfs