Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Trempe structurale-fr#Sense
Temple de precipitación-es#Sense
Precipitation hardening-en#Sense
Erkaumakarkaisu-fi#Sense
Utskiljningshärdning-sv#Sense
Ausscheidungshärten-de#Sense