# Robert Summer Sigafoos

> geologist and botanical collector (1920- )

**Wikidata**: [Q112460005](https://www.wikidata.org/wiki/Q112460005)  
**Source**: https://4ort.xyz/entity/robert-summer-sigafoos


## References

1. Czech National Authority Database
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. Virtual International Authority File
4. National Library of Israel Names and Subjects Authority File