# Karl Albert Helbing
**Wikidata**: [Q55897475](https://www.wikidata.org/wiki/Q55897475)  
**Source**: https://4ort.xyz/entity/karl-albert-helbing


## References

1. Integrated Authority File
2. CERL Thesaurus
3. Catalog of the German National Library
4. [Source](http://thesaurus.cerl.org/record/cnp01080749)