Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of CDA-fr#Sense
Couche de demi-atténuation-fr#Sense
Couche de demi-absorption-fr#Sense
HVL-en#Sense
Half value layer-en#Sense
Couche de demi-transmission-fr#Sense