# Carl Johan Keyser
**Wikidata**: [Q5907436](https://www.wikidata.org/wiki/Q5907436)  
**Source**: https://4ort.xyz/entity/carl-johan-keyser


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. Integrated Authority File
4. [LIBRIS. 2012](https://libris.kb.se/katalogisering/mkz26f555mdjsrc)