# Johanna Cornelia Thoden van Velzen

> Ph.D. Universiteit Utrecht 1928

**Wikidata**: [Q102313307](https://www.wikidata.org/wiki/Q102313307)  
**Source**: https://4ort.xyz/entity/johanna-cornelia-thoden-van-velzen


## References

1. Mathematics Genealogy Project
2. Dutch National Thesaurus for Author Names