(3GdfXGe GdGbJUGOj GdOhdj GdeYGUQ (B( (3YGde GdeYQaI (B257 ) : s (3ef fgGjI GdMQH GdYGdejI GdKGfjI Gdi fgGjI GdMQH GdHGQOI (B/ s - (3MGRe GdHHdGhis ((3GdchjJ (B: s (3GdeLdS GdhWfi ddKbGaI hGdafhf hGdGOGH , s, 2000)
Keywords: (3GdGbJUGO GdOhdis; (3GdGMhGd GdGbJUGOjIs