# Hans Jørgen Birch
**Wikidata**: [Q12315420](https://www.wikidata.org/wiki/Q12315420)  
**Source**: https://4ort.xyz/entity/hans-j-rgen-birch


## References

1. Virtual International Authority File
2. CERL Thesaurus
3. Dansk Biografisk Leksikon
4. LIBRIS. 2013