# Arthur Joseph de Sopper
**Wikidata**: [Q55682753](https://www.wikidata.org/wiki/Q55682753)  
**Source**: https://4ort.xyz/entity/arthur-joseph-de-sopper


## References

1. Catalogus Professorum Academiae Groninganae
2. Integrated Authority File
3. Leidse Hoogleraren
4. Biografisch Portaal