(3GdMK Ydi MaX GdYde hPcQ cHGQ GdMaGX (B/s - (3GHf GdLhRj, YHO GdQMef Hf Ydj Hf eMeO,s 508-597 (3g`(B.s ((3HjQhJ (B:s (3OGQ GdcJH GdYdejI,s, 1985)
Keywords: (3GdeMOKhfs -- (3JQGLes; (3GdJQHjI GdESdGejIs; (3GdESdGe hGdYdes