# Robert David Sack

> geographer

**Wikidata**: [Q58242399](https://www.wikidata.org/wiki/Q58242399)  
**Source**: https://4ort.xyz/entity/robert-david-sack


## References

1. Czech National Authority Database
2. [Source](https://www.gf.org/fellows/all-fellows/robert-d-sack/)
3. [Source](https://www.amacad.org/multimedia/pdfs/publications/bookofmembers/ChapterS.pdf)
4. Library of Congress Name Authority File
5. Virtual International Authority File
6. National Library of Israel Names and Subjects Authority File