(3QSGdI GdWHjYI (B/ s - (3GdfhQSj, HOjY GdReGf SYjOs; (3GdUGdMj, EMSGf bGSes ((3ESJGfHhd (B:s (3OGQ jfj CSjG,s, 1987)
Keywords: (3GdESdGes