Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of (net van) hoofdafvoerkanalen-nl#Sense
Peruskuivatus-fi#Sense
Assainissement agricole-fr#Sense
Valtaojitus-fi#Sense
Arterial drainage-en#Sense
Vorflutbeschaffung-de#Sense
Hovedafvanding-da#Sense
Red de colectores-es#Sense
Drenaggio della rete idrografica-it#Sense