# Karl-Ludwig Ay

> German historian

**Wikidata**: [Q18628040](https://www.wikidata.org/wiki/Q18628040)  
**Source**: https://4ort.xyz/entity/karl-ludwig-ay


## References

1. general catalog of BnF
2. BnF authorities
3. Virtual International Authority File
4. National Library of Israel Names and Subjects Authority File