(3GdGSdGe aj GaQjbjG GdhSWi (B/s - (3GdfYeI , GHQGgje s ((3GdehUd (B:s (3eWHYI GdRgQGA ,s, 1981)
Keywords: (3GdGSdGe (B- (3GaQjbjG GdhSWi s