# Ludwig J. Issing
**Wikidata**: [Q113772476](https://www.wikidata.org/wiki/Q113772476)  
**Source**: https://4ort.xyz/entity/ludwig-j-issing


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. Index Theologicus
4. Integrated Authority File
5. National Library of Israel Names and Subjects Authority File