(3GdfXGe GdbGfhfj ddeVGFb GdYQHjI (B/s - (3GdjhSaj, Cejf eMeO bGFOs ((3HjQhJ (B:s (3OGQ GdMOGKI ddfTQ,s, 1988)
(3HHdjhLQGajI (B: (3U(B. 234-236.s
Keywords: (3GdeVGjb GdeGFjI (B((3bGfhf Ohdj(B)s -- (3GdHdGO GdYQHjIs; (3GdbGfhf GdOhdj GdHMQjs -- (3GdHdGO GdYQHjIs