# Heinrich Otto Duysing
**Wikidata**: [Q68097626](https://www.wikidata.org/wiki/Q68097626)  
**Source**: https://4ort.xyz/entity/q68097626


## References

1. Virtual International Authority File
2. CERL Thesaurus
3. [Source](http://www.uni-marburg.de/uniarchiv/pkat/details?id=9231)