About: environmental radiation

Premodifier: environmental
Head noun: radiation

Same concepts
http://dbpedia.org/resource/Background_radiation

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
cosmic ray	isap:262007554	0.744015
x-ray	isap:337369545	0.403655
radiation	isap:352612688	0.344412