Source Data Reference for:
City = Opole
Time = 1950
| City | Year | Size | Size Comment | Year Comment | Author | Title | Location |
|---|---|---|---|---|---|---|---|
| Opole | 1947 | 27,700 | Johan Huizinga | Internationaal aardrijkskundig woordenboek |
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Source Data Reference for:
City = Opole
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