(3GdVYa aj GdbQGAI (B: s (3JTNjUg h YdGLg (B/ s - (3eQSj, eMeO efjQs; (3CHh GdYRGje, ESeGYjds ((3GdbGgQI (B:s (3YGde GdcJH,s, 1983)
Keywords: (3GdJYdje GdEHJOGFjs; (3GdbQGAIs