# Ludwin Langenfeld
**Wikidata**: [Q55680407](https://www.wikidata.org/wiki/Q55680407)  
**Source**: https://4ort.xyz/entity/ludwin-langenfeld


## References

1. Integrated Authority File
2. [Source](https://kalliope-verbund.info/DE-611-BF-100711)
3. Virtual International Authority File
4. National Library of Israel Names and Subjects Authority File