# Iosif Keller

> theatre director, librettist and writer (1903-1977)

**Wikidata**: [Q27609818](https://www.wikidata.org/wiki/Q27609818)  
**Source**: https://4ort.xyz/entity/iosif-keller


## References

1. Czech National Authority Database
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)