# Pieter N. Holtrop
**Wikidata**: [Q113782370](https://www.wikidata.org/wiki/Q113782370)  
**Source**: https://4ort.xyz/entity/pieter-n-holtrop


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. Index Theologicus
4. CiNii Research
5. Integrated Authority File