# Johann Friedrich Keyser
**Wikidata**: [Q55853375](https://www.wikidata.org/wiki/Q55853375)  
**Source**: https://4ort.xyz/entity/johann-friedrich-keyser


## References

1. Integrated Authority File
2. LIBRIS. 2018
3. Catalog of the German National Library
4. Deutsche Biographie
5. Alvin