Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6821
Is Reference of Betonnen riool met verhoogd ovaal profiel-nl#Sense
Canalisation a section a radier concave-fr#Sense
Canalisation a section a voute inversee-fr#Sense
Extra-high egg shaped concrete sewer-en#Sense
Betonkanal UEM;Betonkanal ueberhoehtes Maulprofil-de#Sense