Citations
Map showing Plebiscite in Upper Silesia, 1921, GBR/3296/Maps/Maps.Dowson.Poland.1, Poland.1. Cambridge University Library. |
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Map showing Plebiscite in Upper Silesia, 1921, GBR/3296/Maps/Maps.Dowson.Poland.1, Poland.1. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/247397 Accessed January 11, 2025. |