(3OQY GdUMQGA h GdfXGe GdYGdej GdLOjO (B/ s - (3OjajR, fhQOs; (3GdXGgQ, eMeOs; (3SeGQg, efjgs ((3YeGf (B:s (3OGQ GdcQed,s, 1991)
Keywords: (3GdHdOGf GdYQHjIs; (3GdCMhGd GdSjGSjIs; (3GdhdGjGJ GdeJMOIs; (3GdYdGbGJ GdOhdjIs; (3GdTQb GdChSWs; (3MQH GdNdjL (B1991s