# Johann Jahn
**Wikidata**: [Q62745551](https://www.wikidata.org/wiki/Q62745551)  
**Source**: https://4ort.xyz/entity/johann-jahn-q62745551


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. CERL Thesaurus
4. LIBRIS
5. MAK
6. [LIBRIS. 2018](https://libris.kb.se/ljx15rb42qql77p)