# Martinus de Haas

> lecturer (1891-1964)

**Wikidata**: [Q65920447](https://www.wikidata.org/wiki/Q65920447)  
**Source**: https://4ort.xyz/entity/martinus-de-haas


## References

1. Source
2. [Source](https://www.openarchieven.nl/raa:f5b8853b-51b7-4947-973e-6d1b839b9371)
3. [Source](https://www.openarchieven.nl/rat:5553965a-48be-7df8-9891-06f0b57b3b53)
4. Virtual International Authority File