# Berthold Koletzko
**Wikidata**: [Q67172871](https://www.wikidata.org/wiki/Q67172871)  
**Source**: https://4ort.xyz/entity/berthold-koletzko


## References

1. Virtual International Authority File
2. Integrated Authority File
3. datos.bne.es
4. CiNii Research
5. VIAF ID
6. NUKAT
7. MAK
8. National Library of Israel Names and Subjects Authority File