# Ferdinand Opll

> Austrian regional historian, medievalist and archivist

**Wikidata**: [Q1405665](https://www.wikidata.org/wiki/Q1405665)  
**Source**: https://4ort.xyz/entity/ferdinand-opll


## References

1. Integrated Authority File
2. BnF authorities
3. International Standard Name Identifier
4. Virtual International Authority File
5. CiNii Research
6. CONOR.SI
7. [Source](https://mix-n-match.toolforge.org/#/entry/63765223)
8. National Library of Israel Names and Subjects Authority File
9. Bibliography of the History of the Czech Lands
10. Regional Database of the Central Bohemian Research Library in Kladno