(3GdfeGPL GdHTQjI aj COH KQhJ CHGXI (B/ s - (3TQa, YHO GdYRjRs ((3HjQhJ (B:s (3OGQ GdLjd,s, 1980)
Keywords: (3GdCOH GdYQHjs; (3GdfbO GdCOHjs; (3eUQs