# Jan Adolf Grutterink

> Dutch geologist (1879-1949)

**Wikidata**: [Q20972275](https://www.wikidata.org/wiki/Q20972275)  
**Source**: https://4ort.xyz/entity/jan-adolf-grutterink


## References

1. dataset Library TU Delft
2. Integrated Authority File
3. Biografisch Portaal