(3GdhSjW aj GdJTQjYGJ GdELJeGYjI (B: s (3OQGSI ddfUhU GdJTQjYjI aj VhA CMcGe GdfbV h QCj Gdabg (B/ s - (3GdedjLj, CMeO Thbjs ((3GdbGgQg (B:s (3eDSSI QhR GdjhSa,s, 1984)
Keywords: (3GdYed h GdYeGds; (3bGfhf GdYeds; (3bGfhf GdJCejf GdELJeGYjs