Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Gerinnehydraulik-de#Sense
Hydraulique fluviale-fr#Sense
Idraulica fluviale-it#Sense
Flusshydraulik-de#Sense
River hydraulics-en#Sense
Open channel hydraulics-en#Sense