# Hanns Michael Crass

> German librarian

**Wikidata**: [Q112541481](https://www.wikidata.org/wiki/Q112541481)  
**Source**: https://4ort.xyz/entity/hanns-michael-crass


## References

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