# Maria Janowska-Kopczyńska

> Polish opera and operetta singer

**Wikidata**: [Q87247838](https://www.wikidata.org/wiki/Q87247838)  
**Source**: https://4ort.xyz/entity/maria-janowska-kopczy-ska


## References

1. Integrated Authority File
2. Bayerisches Musiker-Lexikon Online
3. Virtual International Authority File
4. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
5. e-teatr.pl