(3CMcGe GdTaYI aj VhA GdbVGA h Gdabg (B/ s - (3GdThGQHj, YHO GdMejOs ((3GdEScfOQjI (B:s (3OGQ GdeWHhYGJ GdLGeYjI,s, 1986)
Keywords: (3GdESdGe(B. s; (3Gdabg(B. s; (3GdeYGedGJ (B((3abg ESdGej(B). s; (3Mb GdTaYI(B. s