(3GdaJGhj GdNjQjI dfaY GdHQjIs - (3GdGeGe GdGYXe(B/(3GHj MfjaI GdfYeGf s ((3HjQhJ(B/(3dHfGfs (3OGQ GdeYQaI ddfTQs, 1974)
Keywords: (3Gdabg hGdGMcGe GdTQYjIs