# Jan P. Lettinga

> 1921-2021

**Wikidata**: [Q112356646](https://www.wikidata.org/wiki/Q112356646)  
**Source**: https://4ort.xyz/entity/jan-p-lettinga


## References

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