# Emil Villiger
**Wikidata**: [Q9253570](https://www.wikidata.org/wiki/Q9253570)  
**Source**: https://4ort.xyz/entity/emil-villiger


## References

1. IdRef
2. Catalog of the German National Library
3. Virtual International Authority File
4. Open Library
5. Biodiversity Heritage Library
6. NUKAT
7. National Library of Israel Names and Subjects Authority File