# Richard Sontag
**Wikidata**: [Q40430312](https://www.wikidata.org/wiki/Q40430312)  
**Source**: https://4ort.xyz/entity/richard-sontag


## References

1. [Source](https://www.freidok.uni-freiburg.de/fedora/objects/freidok:5871/datastreams/FILE1/content)