Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Selective hardening-en#Sense
Teilhärtung-de#Sense
Temple local-es#Sense
Selektiivinen karkaisu-fi#Sense
Selektiv härdning-sv#Sense
Osakarkaisu-fi#Sense
Trempe locale-fr#Sense