# Gijsbertus Wilhelmus Marie Kallenberg

> Ph.D. Universiteit Leiden 1950

**Wikidata**: [Q73538962](https://www.wikidata.org/wiki/Q73538962)  
**Source**: https://4ort.xyz/entity/gijsbertus-wilhelmus-marie-kallenberg


## References

1. Integrated Authority File
2. Virtual International Authority File
3. data.bibliotheken.nl
4. Mathematics Genealogy Project
5. dataset Library TU Delft. 2017