# Helmut E. Freitag

> German botanist and university teacher

**Wikidata**: [Q276910](https://www.wikidata.org/wiki/Q276910)  
**Source**: https://4ort.xyz/entity/helmut-e-freitag


## References

1. Catalog of the German National Library
2. Czech National Authority Database
3. International Plant Names Index
4. [Source](https://www.uni-kassel.de/fb10/en/institute/biologie/fachgebiete/botany/staff/prof-em-dr-helmut-freitag)
5. [Source](https://www.uni-kassel.de/fb10/institute/biologie/fachgebiete/botanik/mitarbeitende-der-arbeitsgruppe.html)
6. Virtual International Authority File
7. author citation in botany and mycology
8. Harvard Index of Botanists
9. IdRef
10. National Library of Israel Names and Subjects Authority File
11. [Source](https://herbarium.bgbm.org/object/B100261501)
12. [Source](https://w.jacq.org/W19740006476)
13. [Source](https://mjg.jacq.org/MJG002217)
14. [Source](https://wu.jacq.org/WU0071071)
15. [Source](https://je.jacq.org/JE00021140)