# John Haller

> Swizz-American geologist (1927-1984)

**Wikidata**: [Q94898427](https://www.wikidata.org/wiki/Q94898427)  
**Source**: https://4ort.xyz/entity/john-haller


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Historical Dictionary of Switzerland
4. [Source](https://kalliope-verbund.info/DE-611-BF-18197)