# Gerhard Poppenberg
**Wikidata**: [Q93387590](https://www.wikidata.org/wiki/Q93387590)  
**Source**: https://4ort.xyz/entity/gerhard-poppenberg


## References

1. BnF authorities
2. datos.bne.es
3. Catalog of the German National Library
4. CiNii Research
5. Virtual International Authority File