# John Sykes

> English physicist, lexicographer, and crossword solver

**Wikidata**: [Q18917455](https://www.wikidata.org/wiki/Q18917455)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/John_Bradbury_Sykes)  
**Source**: https://4ort.xyz/entity/john-sykes-q18917455


## References

1. Oxford Dictionary of National Biography
2. Who's Who
3. BnF authorities
4. The Times. 1993
5. Czech National Authority Database
6. general catalog of BnF
7. Virtual International Authority File
8. CiNii Research
9. National Library of Israel Names and Subjects Authority File