(3JMQja QSGdI GdeSjM Ydjg GdSdGe YHQ GdJGQjN (B: s (3CSHGHg h fJGFLg (B/ s - (3LSJfjg, HSeI CMeOs ((3OeTb (B:s (3OGQ Gdbde,s, 2000)
Keywords: (3GdeSjMs; (3GdeSjMjIs; (3GdeSjMjhfs