Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Fri ånga-sv#Sense
Vapor primario-es#Sense
Vapor directo-es#Sense
Primärdampf-de#Sense
Direkt ånga-sv#Sense
Vapeur directe-fr#Sense
Direct steam-en#Sense
Primaire stoom-nl#Sense
Primærdamp-da#Sense
Vapor direto-pt#Sense
Vapore diretto-it#Sense
Primäärihöyry-fi#Sense