Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Demi-vie-fr#Sense
Período-pt#Sense
Halfwaardetijd-nl#Sense
Meia-vida-pt#Sense
Halveringstijd-nl#Sense
Χρόνος υποδιπλασιασμού; περίοδος ημιζωής-el#Sense