# Q28738099
**Wikidata**: [Q28738099](https://www.wikidata.org/wiki/Q28738099)  
**Source**: https://4ort.xyz/entity/q28738099


## References

1. German and Austrian Library Statistics
2. [Source](https://isil.staatsbibliothek-berlin.de/isil/?isil=DE-Pir3)