Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/4826001
Is Reference of Nederlandse Luchtvaart Autoriteit-nl#Sense
Autorité de l'Aviation civile néerlandaise-fr#Sense
Niederländische Luftfahrtbehörde-de#Sense
Dutch Aviation Authority-en#Sense
NLA-nl#Sense