(3GdEOGQI HGdCgOGa h GdfJGFL (B/ s - (3eQGQ, ajUd aNQjs ((3YeGf (B:s (3GdefXeI GdYQHjI ddYdhe GdEOGQjI,s, 1981)
Keywords: (3EOGQI GdCYeGds