# Theodor von Köstlin
**Wikidata**: [Q55910839](https://www.wikidata.org/wiki/Q55910839)  
**Source**: https://4ort.xyz/entity/theodor-von-k-stlin


## References

1. CERL Thesaurus
2. Catalog of the German National Library
3. [Source](http://thesaurus.cerl.org/record/cnp00814410)