(3GdOYGFe GdNdbjI ddbhGfjf GdTQYjI(B/s - (3GdeMeUGfj,UHMjs ((3HjQhJ(B[(3dHfGf(B]:s (3OGQ GdYde ddedGjjf,s, 1979)
Keywords: (3GdTQjYI GdGSdGejIs