# Jaap van Velzen
**Wikidata**: [Q61857994](https://www.wikidata.org/wiki/Q61857994)  
**Source**: https://4ort.xyz/entity/jaap-van-velzen


## References

1. [Source](https://www.crescas.nl/nieuws/2016-07-22/vl4oz/Jaap-van-Velzen-1931-2016/)
2. Faceted Application of Subject Terminology
3. [Geni.com](https://www.geni.com/people/Jacob-Jaap-van-Velzen/6000000045644690161)
4. Virtual International Authority File
5. National Library of Israel Names and Subjects Authority File