# Julian Sielewicz

> Polish air force officer killed in the Katyn massacre

**Wikidata**: [Q19690413](https://www.wikidata.org/wiki/Q19690413)  
**Source**: https://4ort.xyz/entity/julian-sielewicz


## References

1. [Source](http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&NU=1&IM=4&WI=9811301912305606)
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. Sejm-Wielki.pl