# Karl Zettel

> German writer (1831-1904)

**Wikidata**: [Q1733521](https://www.wikidata.org/wiki/Q1733521)  
**Source**: https://4ort.xyz/entity/karl-zettel


## References

1. Integrated Authority File
2. [Source](http://viaf.org/viaf/data/viaf-20170101-links.txt.gz)
3. Virtual International Authority File
4. [Source](https://kalliope-verbund.info/DE-611-BF-9136)
5. International Music Score Library Project