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Subjects| Subjects term | Scope note | Archival description count | Authority record count |
|---|---|---|---|
| Red ferroviaria | 3 | 0 | |
| Tecnología | 1 | 0 | |
| Mármol | 8 | 0 | |
| Gestión ambiental | 1 | 0 | |
| Control de la contaminación | 1 | 0 | |
| Universidades | 3 | 0 | |
| Campañas generales de UGT | 0 | 0 | |
| Constitución | 0 | 0 | |
| Telefonía | 0 | 0 | |
| Afiliaciones | 0 | 0 |