(3eLdI GdYOGdI(B.s (3SHJeHQ (B1975 /s ((3GdEeGQGJ GdYQHjI GdeJMOI(B:s (3hRGQI GdYOd hGdTDhf GdGSdGejI hGdChbGa,s, 1975)
(3GfMQGa GdGMOGK (B/s (3C(B. (3eMeO EHQGgje(B.s
(3eLdI bGfhfjI JYfi HEMjGA GdJQGK Gdabgj GdESdGej hGdCHMGK GdbGfhfjI GdeYGUQI hGdOQGSGJ GdCLfHjI GdebGQfI hfTQ GdGLJgGO GdbVGFj aj OhdI GdEeGQGJ GdYQHjI GdeJMOI(B.s
(3GdSfI GdKGfjI(B: (3GdYOO GdKGef(B.s
Keywords: (3GdTQjYI GdESdGejIs -- (3OhQjGJs