Head noun: 3h

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

Broader concepts

labelprovenanceconfidence
radioactive isotopeisap:300850490.405897
isotopeisap:300850500.265656
pencilisap:1086492690.206120
derivativeisap:2652727150.114389

Narrower concepts

labelprovenanceconfidence