(3GdLhGH GdcGaj def SCd Yf GdOhGA GdTGaj (B/s - (3GHf bje GdLhRjI, eMeO Hf CHj HcQ Hf CjhH,s 691-751 (3gLQjG(B.s ((3HjQhJ (B:s (3OGQ GdfOhI GdLOjOI,s, 1991)
Keywords: (3GdhYX hGdEQTGOs; (3GdOYhI GdESdGejIs