Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Verifica col martello-it#Sense
Έλεγχος με το σφυρί του επισώτρου-el#Sense
Inspeção com martelo-pt#Sense
Hammer testing-en#Sense
Toetsing met de hamer-nl#Sense
Inspección al martillo-es#Sense
Abklopfen-de#Sense
Sondage au marteau-fr#Sense
Prøvning af hjulring med hammer-da#Sense