# Johann Baptist Greger
**Wikidata**: [Q55901951](https://www.wikidata.org/wiki/Q55901951)  
**Source**: https://4ort.xyz/entity/johann-baptist-greger


## References

1. CERL Thesaurus
2. Catalog of the German National Library
3. Répertoire International des Sources Musicales
4. [Source](http://thesaurus.cerl.org/record/cnp00387685)