# Birgit Sack

> historian

**Wikidata**: [Q111019605](https://www.wikidata.org/wiki/Q111019605)  
**Source**: https://4ort.xyz/entity/birgit-sack


## References

1. IdRef
2. Czech National Authority Database
3. [Source](http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&NU=1&IM=4&WI=9810583072805606)