# Gertrude Hirsch Hadorn
**Wikidata**: [Q64167596](https://www.wikidata.org/wiki/Q64167596)  
**Source**: https://4ort.xyz/entity/gertrude-hirsch-hadorn


## References

1. IdRef
2. Catalog of the German National Library
3. British National Bibliography
4. VIAF ID
5. Autoritats UB
6. NUKAT
7. LIBRIS