# Otto Johann Hermann Karl
**Wikidata**: [Q55058255](https://www.wikidata.org/wiki/Q55058255)  
**Source**: https://4ort.xyz/entity/otto-johann-hermann-karl


## References

1. Catalog of the German National Library
2. GEPRIS Historisch
3. Virtual International Authority File
4. Biographies of the Entomologists of the World
5. Integrated Authority File
6. Biodiversity Heritage Library