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| Date | Type | Code | Nom |
|---|---|---|---|
| 1983-02-21 | Suppression | 66161 | Ria-Sirach-Urbanya |
| 1983-02-21 | Rétablissement | 66161 | Ria-Sirach-Urbanya → Ria-Sirach |
| 1983-02-21 | Rétablissement | 66161 → 66219 | Ria-Sirach-Urbanya → Urbanya |
| 1973-03-01 | Suppression | 66161 | Ria |
| 1973-03-01 | Fusion simple | 66161 | Ria → Ria-Sirach-Urbanya |
| 1973-03-01 | Fusion simple | 66219 → 66161 | Urbanya → Ria-Sirach-Urbanya |
| 1943-01-01 | Création | 66161 | Ria |