# André Georges Frédéric van Holk
**Wikidata**: [Q21551901](https://www.wikidata.org/wiki/Q21551901)  
**Source**: https://4ort.xyz/entity/andr-georges-fr-d-ric-van-holk


## References

1. [Catalogus Professorum Academiae Groninganae](http://hoogleraren.ub.rug.nl/?page=showPerson&type=hoogleraar&hoogleraar_id=981)
2. Czech National Authority Database
3. Catalogus Professorum Academiae Groninganae
4. Catalog of the German National Library
5. Faceted Application of Subject Terminology
6. Digital Library for Dutch Literature
7. NUKAT
8. CONOR.SR
9. BnF authorities
10. Virtual International Authority File
11. LIBRIS
12. National Library of Israel Names and Subjects Authority File