# Karl Grammer

> German ethologist

**Wikidata**: [Q1721366](https://www.wikidata.org/wiki/Q1721366)  
**Source**: https://4ort.xyz/entity/karl-grammer


## References

1. Integrated Authority File
2. Czech National Authority Database
3. International Standard Name Identifier
4. Virtual International Authority File
5. [Source](http://www.researcherid.com/rid/A-5012-2011)
6. NUKAT
7. National Library of Israel Names and Subjects Authority File