# Christoph Etzel
**Wikidata**: [Q55902973](https://www.wikidata.org/wiki/Q55902973)  
**Source**: https://4ort.xyz/entity/christoph-etzel


## References

1. Integrated Authority File
2. CERL Thesaurus
3. Catalog of the German National Library
4. [Source](http://thesaurus.cerl.org/record/cnp01142768)