# Yrjö Hakulinen
**Wikidata**: [Q18688440](https://www.wikidata.org/wiki/Q18688440)  
**Source**: https://4ort.xyz/entity/yrj-hakulinen-q18688440


## References

1. BnF authorities
2. BiographySampo
3. The National Biography of Finland
4. general catalog of BnF
5. Virtual International Authority File