# Jan Prokopowicz
**Wikidata**: [Q111239306](https://www.wikidata.org/wiki/Q111239306)  
**Source**: https://4ort.xyz/entity/jan-prokopowicz-q111239306


## References

1. Integrated Authority File
2. Virtual International Authority File
3. [Source](https://katalog.bip.ipn.gov.pl/informacje/23431)