# Johann Friedrich Ettmüller
**Wikidata**: [Q55891716](https://www.wikidata.org/wiki/Q55891716)  
**Source**: https://4ort.xyz/entity/johann-friedrich-ettm-ller


## References

1. Integrated Authority File
2. CERL Thesaurus
3. Catalog of the German National Library
4. [Source](http://thesaurus.cerl.org/record/cnp00469377)