# Georg Hayer
**Wikidata**: [Q104244434](https://www.wikidata.org/wiki/Q104244434)  
**Source**: https://4ort.xyz/entity/georg-hayer


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. [Source](http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&NU=1&IM=4&WI=9810637693105606)
4. NUKAT
5. Invaluable