# Karl Marbe

> German educationist, philosopher and psychologist (1869–1953)

**Wikidata**: [Q1499336](https://www.wikidata.org/wiki/Q1499336)  
**Source**: https://4ort.xyz/entity/karl-marbe


## References

1. Integrated Authority File
2. Mathematics Genealogy Project
3. Czech National Authority Database
4. International Standard Name Identifier
5. Virtual International Authority File
6. [Source](https://www.deutsche-biographie.de/sfz58004.html)
7. BnF authorities