# Johann-Gerhard Helmcke

> German biologist and university teacher (1908-1993)

**Wikidata**: [Q21515680](https://www.wikidata.org/wiki/Q21515680)  
**Source**: https://4ort.xyz/entity/johann-gerhard-helmcke-q21515680


## References

1. Catalog of the German National Library
2. Mathematics Genealogy Project
3. [Source](https://doi.org/10.7479/0w3d-h789/25)
4. Integrated Authority File
5. Virtual International Authority File
6. International Plant Names Index
7. [Source](https://www.museumfuernaturkunde.berlin/de/wissenschaft/nachlaesse)
8. [Source](https://kalliope-verbund.info/DE-611-BF-1306)
9. author citation in botany and mycology
10. Harvard Index of Botanists
11. CONOR.SI