(3Gdaf GdYdej ddYeGQI GdMOjKI (B/ s - (3MSf, QLH Ydjs ((3GdbGgQg (B:s (3ecJHg eUQ ddWHGYg h GdfTQ,s, 1991)
Keywords: (3Gdafs; (3GdYeGQIs; (3GdYUQ GdMOjKs