# Upper Silesia

> part of the historical region of Silesia in Poland and Czechia

**Wikidata**: [Q81011](https://www.wikidata.org/wiki/Q81011)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Upper_Silesia)  
**Source**: https://4ort.xyz/entity/upper-silesia


## References

1. Source
2. Freebase Data Dumps. 2013
3. Czech National Authority Database
4. Quora
5. [LIBRIS. 2021](https://libris.kb.se/katalogisering/75knrwnr1pnlf6n)
6. Bibliography of the History of the Czech Lands
7. [Regional Database of the Central Bohemian Research Library in Kladno](https://ipac.svkkl.cz/arl-kl/cs/detail-kl_us_auth-0235418-Horni-Slezsko)
8. museum-digital