# Gustav Adolf Grahl
**Wikidata**: [Q15818646](https://www.wikidata.org/wiki/Q15818646)  
**Source**: https://4ort.xyz/entity/gustav-adolf-grahl


## References

1. CERL Thesaurus
2. Integrated Authority File
3. Catalog of the German National Library
4. WorldCat Entities
5. [Source](http://thesaurus.cerl.org/record/cnp01081918)