IATE-1378954

Subject Field	unknown
Is Reference of	Plan de repère-fr#Sense
	Plan de comparaison-fr#Sense
	Piano di paragone-it#Sense
	Datum level-en#Sense
	Bezugshorizont-de#Sense
	Επίπεδο αναφοράς-el#Sense
	Datum-en#Sense
	Horizontale-de#Sense
	Nul-niveau-da#Sense
	Γραμμή αναφοράς-el#Sense
	Piano di riferimento-it#Sense
	Udgangsniveau-da#Sense
	Vergelijkingsvlak-nl#Sense