# Ger J. de Haan
**Wikidata**: [Q112444704](https://www.wikidata.org/wiki/Q112444704)  
**Source**: https://4ort.xyz/entity/ger-j-de-haan


## References

1. [Catalogus Professorum Academiae Rheno-Traiectinae](https://profs.library.uu.nl/index.php/profrec/getprofdata/758)
2. Catalogus Professorum Academiae Groninganae
3. Czech National Authority Database
4. Virtual International Authority File
5. Integrated Authority File
6. [Source](https://app.dimensions.ai/details/entities/publication/author/ur.013363707563.11)
7. IdRef
8. Norwegian Authority File: Persons and Corporate Bodies
9. International Standard Name Identifier
10. SHARE Catalogue
11. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
12. CiNii Research
13. Digital Library for Dutch Literature