# Karl Hardach

> German economy Master and university teacher

**Wikidata**: [Q19793998](https://www.wikidata.org/wiki/Q19793998)  
**Source**: https://4ort.xyz/entity/karl-hardach


## References

1. [BnF authorities](https://catalogue.bnf.fr/ark:/12148/cb12844993x)
2. general catalog of BnF
3. Virtual International Authority File
4. Integrated Authority File
5. Library of Congress Authorities
6. National Library of Israel Names and Subjects Authority File