# C. P. O. Christiansen
**Wikidata**: [Q112959994](https://www.wikidata.org/wiki/Q112959994)  
**Source**: https://4ort.xyz/entity/c-p-o-christiansen


## References

1. Dansk Biografisk Leksikon, 3rd edition
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)