Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6621
Is Reference of Couche de demi-atténuation-fr#Sense
Half-value thickness-en#Sense
Épaisseur de demi-atténuation-fr#Sense
HVT-en#Sense
HVL-en#Sense
Half-value layer-en#Sense
C.D.A.-fr#Sense