# Philipp Kohnstamm

> Dutch physicist, philosopher, and educator (1875-1951)

**Wikidata**: [Q4014705](https://www.wikidata.org/wiki/Q4014705)  
**Source**: https://4ort.xyz/entity/philipp-kohnstamm


## References

1. Integrated Authority File
2. Catalogus Professorum Academiae Rheno-Traiectinae
3. Album Academicum
4. Mathematics Genealogy Project
5. [Source](https://hdl.handle.net/21.12123/11763)
6. Biografisch Portaal
7. Virtual International Authority File