(3ajdGJ dbVGA GdYWdI (B/ s - (3fUQi LQLSs ((3ShQjG (B: s (3OGQ GdOQGSGJ GdeYeGQjI hGdHjFjI , s, 1990)
Keywords: (3GdQSe GdeYeGQis; (3GdJUeje GdgfOSis; (3GdajdGJs