# Hendericus M. Klaassen

> Prussian-born businessman and geologist

**Wikidata**: [Q130241088](https://www.wikidata.org/wiki/Q130241088)  
**Source**: https://4ort.xyz/entity/hendericus-m-klaassen


## References

1. [Geological Magazine. 2009](https://www.cambridge.org/core/journals/geological-magazine/article/hendericus-m-klaassen-fgs/469E0522AB14EE62611A1B1D26D3E55D)
2. FamilySearch Family Tree