# Carl Deffner

> German geologist (1817-1877)

**Wikidata**: [Q1730697](https://www.wikidata.org/wiki/Q1730697)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Karl_Deffner)  
**Source**: https://4ort.xyz/entity/carl-deffner


## References

1. Integrated Authority File
2. Virtual International Authority File
3. [Source](https://www.stadtarchiv-esslingen.findbuch.net/php/main.php#4530303237)
4. [Source](https://kalliope-verbund.info/DE-611-BF-107717)
5. CERL Thesaurus