# Józef Mroczkowski
**Wikidata**: [Q94901668](https://www.wikidata.org/wiki/Q94901668)  
**Source**: https://4ort.xyz/entity/j-zef-mroczkowski


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. National Library of Israel Names and Subjects Authority File