# E. Klassen
**Wikidata**: [Q4223006](https://www.wikidata.org/wiki/Q4223006)  
**Source**: https://4ort.xyz/entity/e-klassen


## References

1. IdRef
2. Virtual International Authority File
3. CiNii Research
4. Integrated Authority File
5. NUKAT
6. CONOR.BG
7. MAK
8. CERL Thesaurus