(3GdZfGFjI hdGeJOGO GdLeGdj aj TYQ GMeO aDGO fLe (B/s - (3Hf GMehOI , eMeO s ((3JhfS (B:s (3GdeDSSI GdYQHjI ,s, 1989)
Keywords: (3TYQs; (3GdLeGdj s; (3GdZfGFjIs; (3dGeJOGO s