(3GdfUhU GdeOQSjI GdbQUjI GdTcd (B/ s - (3YHOGdgGOi GdaDGOis ([S.N] : (3GdeDSSI GdYGeI ddGKGQ , s, 1979)
Keywords: (3GdJYdjes; (3GdHGHdjhfs; (3MVGQI GdYQGb GdbOjeIs