(3GddGYH hGddYHI(B: (3YGde GdGSJNHGQGJ GdGeQjcjI ai GYJQGaGJ GMO QLGdGJg (B/ s - (3chHdGfO, eGjdRs ([S.N] : (3OGQ GdMeQGA , s, 1990)
Keywords: (3GdhdGjGJ GdeJMOI GdGeQjcjIs; (3GdTQb GdGhSWs; (3hcGdI GdeNGHQGJs; (3LeGd YHOGdfGUQs