# Theodore Ryken
**Wikidata**: [Q7782023](https://www.wikidata.org/wiki/Q7782023)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Theodore_Ryken)  
**Source**: https://4ort.xyz/entity/theodore-ryken


## References

1. ODIS
2. Faceted Application of Subject Terminology
3. CERL Thesaurus