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| Data sets | Publications | Expeditions | Thesaurus |
Powys Wales  | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Wales | |
| .....Powys Wales | |
| NT | Brecknockshire Wales |
| Radnorshire Wales | |
| SN | County in central Wales. Formed from Brecknockshire, Montgomeryshire and Radnorshire in April 1974. |