# Helmut Spanner

> German author

**Wikidata**: [Q1604213](https://www.wikidata.org/wiki/Q1604213)  
**Source**: https://4ort.xyz/entity/helmut-spanner


## References

1. Integrated Authority File
2. BnF authorities
3. International Standard Name Identifier
4. Virtual International Authority File
5. CONOR.SI
6. ADAGP directory