# Detlef Friedrich Bielfeld
**Wikidata**: [Q55916170](https://www.wikidata.org/wiki/Q55916170)  
**Source**: https://4ort.xyz/entity/detlef-friedrich-bielfeld


## References

1. CERL Thesaurus
2. Catalog of the German National Library
3. MAK
4. [Source](http://thesaurus.cerl.org/record/cnp01076395)