# Arrien Johnsen

> German mineralogist (1877-1934)

**Wikidata**: [Q27450449](https://www.wikidata.org/wiki/Q27450449)  
**Source**: https://4ort.xyz/entity/arrien-johnsen


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. [Source](https://www.deutsche-biographie.de/sfz37772.html)
4. FactGrid