(3GdChVGY GdSjGSjI dEeGQGJ GdNdjL GdYQHj h LfhH GdLRjQI(B/s (3GdcJGH GdChd(B.s (3eONd YGe h OQGSI ddchjJ(B.s - (3SjO fhads ((3GdbGgQI (B: s (3eYgO GdHMhK h GdOQGSGJ GdYQHjI(B,s, 1967)
Keywords: (3GdbGfhf GdOhdj GdYGe s