# Karl Heider

> Austrian zoologist and university teacher (1856–1935)

**Wikidata**: [Q84996](https://www.wikidata.org/wiki/Q84996)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Karl_Heider_(zoologist))  
**Source**: https://4ort.xyz/entity/karl-heider


## References

1. Integrated Authority File
2. Deutsche Biographie
3. International Standard Name Identifier
4. Open Library
5. Virtual International Authority File
6. [Source](https://www.museumfuernaturkunde.berlin/de/wissenschaft/nachlaesse)
7. The Stuttgart Database of Scientific Illustrators 1450–1950
8. Biodiversity Heritage Library
9. CONOR.SI
10. Österreichisches Biographisches Lexikon 1815–1950
11. Alvin
12. NUKAT
13. Sapere Encyclopedia
14. [Österreichisches Biographisches Lexikon 1815–1950](https://www.biographien.ac.at/oebl/oebl_H/Heider_Karl_1856_1935.xml)
15. IdRef
16. Treccani's Enciclopedia on line
17. Enciclopedia Treccani