(3GdCUhd GdYdejI h GdYedjI aj JYdje GdWHGYI GdYQHjI (B/ s - (3TfGYI, eMehO Ydjs ((3YeGf (B:s (3OGQ GdcQed ddfTQ h GdJhRjY,s, 1988)
Keywords: (3GdWHGYIs; (3GdBdGJ GdcGJHIs