# Theodorus Wilhelmus Ruijgrok

> Ph.D. Universiteit Utrecht 1958

**Wikidata**: [Q102305516](https://www.wikidata.org/wiki/Q102305516)  
**Source**: https://4ort.xyz/entity/theodorus-wilhelmus-ruijgrok


## References

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