# Otto Hagen

> German forester (1817-1880)

**Wikidata**: [Q2041212](https://www.wikidata.org/wiki/Q2041212)  
**Source**: https://4ort.xyz/entity/otto-hagen-q2041212


## References

1. Integrated Authority File
2. [Source](http://viaf.org/viaf/data/viaf-20170101-links.txt.gz)
3. Virtual International Authority File