# Wilhelm Derrer
**Wikidata**: [Q55906070](https://www.wikidata.org/wiki/Q55906070)  
**Source**: https://4ort.xyz/entity/wilhelm-derrer


## References

1. Integrated Authority File
2. CERL Thesaurus
3. Catalog of the German National Library
4. [Source](http://thesaurus.cerl.org/record/cnp01288221)