Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Overeengekomen lage rivierstand-nl#Sense
ELWL-en#Sense
Gleichwertiger Wasserstand-de#Sense
Étiage équivalent-fr#Sense
OLR-nl#Sense
Equivalent low water level-en#Sense
Gl W-de#Sense
EE-fr#Sense