# Q98856439
**Wikidata**: [Q98856439](https://www.wikidata.org/wiki/Q98856439)  
**Source**: https://4ort.xyz/entity/q98856439


## References

1. [Source](https://www.digi-hub.de/viewer/image/DE-11-001832342/117/LOG_0127/)
2. [Source](https://www.yumpu.com/nl/document/read/20247875/20f925-bw-lessen-2007-nationaal-onderwijsmuseum)
3. [Source](https://anthrosource.onlinelibrary.wiley.com/doi/full/10.1111/aman.13385)
4. [Source](https://www.onderwijsmuseum.nl/collectiestuk/menselijke-meetkunde)