# Heinz F. Friederichs
**Wikidata**: [Q55911950](https://www.wikidata.org/wiki/Q55911950)  
**Source**: https://4ort.xyz/entity/heinz-f-friederichs


## References

1. Integrated Authority File
2. CERL Thesaurus
3. Catalog of the German National Library
4. VcBA (identifier)
5. NUKAT
6. IdRef
7. [Source](http://thesaurus.cerl.org/record/cnp01274819)
8. National Library of Israel Names and Subjects Authority File