(3Gdafhf GdRNQajI GdESdGejI aj GdYUQ GdYKeGfj (B/ s - (3eQRhb, eMeO YHO GdYRjRs ((3GdbGgQg (B:s (3GdgjFI GdeUQjI GdYGeI ddcJGH,s, 1987)
Keywords: (3Gdafhf GdESdGejIs; (3GdRNQaIs; (3GdEeHQGWhQjI GdYKeGfjI (B1402-1922s