(3GdfOhI GdYdejI Yf GdeVehf GdSjGSi ddMhGQ GdYQHi GdGhQH(B: (3GdbGgQI (B29-28 (3eGjh(B((3GjGQ(B) 1977 (3GYeGd GdfOhI hHMhKgGs ([S.N] : (3eYgO GdHMhK hGdOQGSGJ GdYQHjI , s, 1978)