# Martha Theodora Frederiks
**Wikidata**: [Q106288780](https://www.wikidata.org/wiki/Q106288780)  
**Source**: https://4ort.xyz/entity/martha-theodora-frederiks


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. Czech National Authority Database
4. NUKAT
5. [Source](https://alkindi.ideo-cairo.org/agent/62914)
6. MAK
7. [Source](http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&NU=1&IM=4&WI=9810655621305606)