# Hans Ravenstein
**Wikidata**: [Q63969902](https://www.wikidata.org/wiki/Q63969902)  
**Source**: https://4ort.xyz/entity/hans-ravenstein


## References

1. CERL Thesaurus
2. Virtual International Authority File
3. Czech National Authority Database
4. Catalog of the German National Library
5. Deutsche Biographie
6. NUKAT
7. MAK
8. [Source](https://opac.si.cobiss.net/opac7/conor/261209699)
9. CONOR.SI
10. [Source](http://thesaurus.cerl.org/record/cnp00781281)