Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6826
Is Reference of Circulação natural-pt#Sense
Naturlig cirkulation-da#Sense
Circulación natural-es#Sense
Circolazione naturale-it#Sense
Natural circulation-en#Sense
Naturumlauf-de#Sense