# Hans Jakob Haag
**Wikidata**: [Q113810598](https://www.wikidata.org/wiki/Q113810598)  
**Source**: https://4ort.xyz/entity/hans-jakob-haag


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. Index Theologicus
5. CiNii Research