# John Call Cook

> geophysicist, developer of ground-penetrating radar (1918-2012)

**Wikidata**: [Q16019342](https://www.wikidata.org/wiki/Q16019342)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/John_Call_Cook)  
**Source**: https://4ort.xyz/entity/john-call-cook