(3fXGe GdThQi aj GdESdGe (B/ s - (3GdNGdOj, eMehOs ((3YeGf (B:s (3ecJHI GdQSGdI GdMOjKI,s, 1986)
Keywords: (3GdCMcGe GdSdWGfjIs; (3GdThQis