(3UhQI GaQjbjGaj GdUMGaI GdYQHjI (B:s (3GdWHYI (B2 /s - (3YHO GdQMef , YhGWa s ((3GdbGgQI (B:s (3OGQ GdacQ GdYQHj ,s, 1986)
Keywords: (3GaQjbjG s; (3UMGaIs; (3YQHjI s; (3UhQIs