# Theodor Grentrup
**Wikidata**: [Q97064987](https://www.wikidata.org/wiki/Q97064987)  
**Source**: https://4ort.xyz/entity/theodor-grentrup


## References

1. Czech National Authority Database
2. Virtual International Authority File
3. Catalog of the German National Library
4. [Source](https://pust.urbe.it/cgi-bin/koha/opac-authoritiesdetail.pl?marc=1&authid=31706)
5. VcBA (identifier)
6. NUKAT
7. MAK
8. CONOR.SI
9. Library of Congress Name Authority File