(3TQM bGfhf JhXja GdGehGd fUhU GdbGfhf (B146 (3dSfI (B1988 (3hdGFMJg GdJfajPjI (B/ s - (3eYhV YHOGdJhGHs ([S.N] : (3efTGI GdeYGQa GdGSdGejI , s, 1989)
Keywords: (3GdbGfhfs; (3bGfhf GdGSJKeGQs