(3GdChVGY GdJTQjYjI aj GdOhd GdYQHjI (B:s (3eGVjgG hMGVQgG (B/s - (3eMeUGfj, UHMj QLHs ((3HjQhJ (B:s (3OGQ GdYde ddedGjjf,s, 1981)
Keywords: (3GdbGfhfs -- (3GdHdGO GdYQHjIs -- (3JGQjNs