# Pieter Johannes Samuel Cramer

> botanist (1879-1952)

**Wikidata**: [Q20643157](https://www.wikidata.org/wiki/Q20643157)  
**Source**: https://4ort.xyz/entity/pieter-johannes-samuel-cramer


## References

1. Catalogus Professorum Academiae Rheno-Traiectinae
2. [Source](https://familiedeclercq.com/geschiedenis/biografische-schetsen/generatie-14/maria-charlotte-de-clercq/)
3. Virtual International Authority File
4. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
5. International Plant Names Index
6. La France savante
7. Biodiversity Heritage Library
8. author citation in botany and mycology
9. Persée
10. Harvard Index of Botanists
11. Album Academicum
12. www.academieoutremer.fr
13. Trove
14. [Source](https://herbarium.bgbm.org/object/B100190642)