(3GdJNWjW dQYGjI GdWahdI GdeHcQI hJQHjJgG aj GdHdOGf GdfGejI (B/s - (3gjQhf ,GdGSJjQs; (3gjQhf , GdGSJjQs ((3GdQjGV (B:s (3ecJH GdJQHjI GdYQHj dOhd GdNdjL ,s, 1980)
Keywords: (3JQHjI GdGWaGd (B.s