(3GdGJUGd GdaYGd ai GdYdGbGJ GdGfSGfjI hGdGOGQI (B/ s - (3eUWai MLGRis ([S.N] : (3GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY , s, 1990)
Keywords: (3GdYdGbGJ GdGfSGfjIs; (3GdGOGQIs