# Wilhelm Haas
**Wikidata**: [Q50329382](https://www.wikidata.org/wiki/Q50329382)  
**Source**: https://4ort.xyz/entity/wilhelm-haas-q50329382


## References

1. Czech National Authority Database
2. [REGO](https://aleph.vkol.cz/F/?func=find-c&ccl_term=sys=000001560&local_base=svk04)
3. Biographical Dictionary of the History of the Czech Lands
4. Virtual International Authority File
5. Bibliography of the History of the Czech Lands
6. Dictionary of Czech librarians