Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Mud pump-en#Sense
Spoelingpomp-nl#Sense
Slush pump-en#Sense
Spuelpumpe-de#Sense
Pompa di circolazione-it#Sense
Pompa di fango-it#Sense
Pompe à boue-fr#Sense