Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Essais en service-fr#Sense
Prüfungen im Betrieb-de#Sense
Proeven in bedrijf-nl#Sense
In-service tests-en#Sense
Prove dal vivo-it#Sense
Afprøvning under drift-da#Sense