# Johannes Hager
**Wikidata**: [Q27652371](https://www.wikidata.org/wiki/Q27652371)  
**Source**: https://4ort.xyz/entity/johannes-hager


## References

1. Czech National Authority Database
2. WorldCat Entities
3. Virtual International Authority File
4. CONOR.SI
5. Autoritats UB
6. National Library of Israel Names and Subjects Authority File