(3GdcJGHI GdYQHjI hGdSGejI OQGSGJ ai JGQjN GdcJGHI hGUhdgG YfO GdSGejjf (B/ s - (3QeRi HYHcis ([S.N] : (3OGQ GdYde ddedGjjf , s, 1981)
Keywords: (3GddZI GdYQHjIs; (3GdcJGHI GdYQHjIs; (3GddZGJ GdSGejIs; (3GdcJGHI, JGQjNs; (3GdfbhT GdSGejIs