# Stefan Koczyński
**Wikidata**: [Q60815892](https://www.wikidata.org/wiki/Q60815892)  
**Source**: https://4ort.xyz/entity/stefan-koczy-ski


## References

1. Catalog of the German National Library
2. [Source](https://www.biographien.ac.at/oebl/oebl_K/Koczynski_Stefan_1859_1917.xml)
3. NUKAT
4. CONOR.SR
5. MAK
6. [Österreichisches Biographisches Lexikon 1815–1950](https://www.biographien.ac.at/oebl/oebl_K/Koczynski_Stefan_1859_1917.xml)