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| Galaxies: active (1) |
| Galaxies: individual (NGC 5548) (1) |
| Galaxies: nuclei (1) |
| Galaxies: Seyfert Supporting material: machine-readable tables (1) |
| Galaxies: active (1) |
| Galaxies: individual (NGC 5548) (1) |
| Galaxies: nuclei (1) |
| Galaxies: Seyfert Supporting material: machine-readable tables (1) |