Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Línea de circulación-es#Sense
Circulation line-en#Sense
Cirkulationsledning-da#Sense
Γραμμή μεταφοράς-el#Sense
Circulatieleiding-nl#Sense
Linea di circolazione-it#Sense
Tubagem de circulação-pt#Sense
Tuyauterie de transit-fr#Sense
Kreislaufrohrleitung-de#Sense