# Willibrord de Graaf
**Wikidata**: [Q112468586](https://www.wikidata.org/wiki/Q112468586)  
**Source**: https://4ort.xyz/entity/willibrord-de-graaf


## References

1. Czech National Authority Database
2. [Source](https://dspace.library.uu.nl/bitstream/handle/1874/194127/zenderen.pdf?sequence=2)
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. CiNii Research