Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/4826002
Is Reference of Korkeuden ja ilmanopeuden rajakäyrä-fi#Sense
Φάκελλος ύψους και ταχύτητας αέρα-el#Sense
Hoogte- en vliegsnelheidsomhullende-nl#Sense
Altitude and airspeed envelope-en#Sense