# R. D. Mullen

> US science fiction critic and scholar, emeritus professor of English at Indiana State University (1915-1998)

**Wikidata**: [Q66501482](https://www.wikidata.org/wiki/Q66501482)  
**Source**: https://4ort.xyz/entity/r-d-mullen


## References

1. Czech National Authority Database
2. [Source](http://www.sf-encyclopedia.com/entry/mullen_r_d)
3. Internet Speculative Fiction Database
4. BnF authorities
5. Virtual International Authority File