# Stephen M. Clifford

> planetary geologist

**Wikidata**: [Q99619518](https://www.wikidata.org/wiki/Q99619518)  
**Source**: https://4ort.xyz/entity/stephen-m-clifford


## References

1. IdRef
2. [Source](https://www.lpi.usra.edu/science/staff/register/)
3. Virtual International Authority File
4. CiNii Research