(3GdMQcI GdCOHjI aj HdGO GdTGe GdLfhHjI (B( (3ef YGe (B1850-(3YGe (B1980) / s - (3GdQhGTOI, MjG Sdje eSdes ((3YeGf (B:s (3hRGQI GdKbGaI,s, 1996)
Keywords: (3GdCOH GdYQHjs; (3GdfbO (B((3GdCOHj(B) (3GdYQHjs; (3GdCOH GdCQOfjs