Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Precipitation treatment-en#Sense
Traitement de précipitation-fr#Sense
Tratamiento de precipitación-es#Sense
Utskiljningshärdning-sv#Sense
Keinotekoinen vanhentaminen-fi#Sense
Künstliche alterung-de#Sense