Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/52
Is Reference of Addolcimento-it#Sense
Enthärtung-de#Sense
Adoucissement-fr#Sense
Feed water softening-en#Sense
Dolcificazione-it#Sense
Dedurizarea apei-ro#Sense
Ontharding-nl#Sense
Correction de la dureté-fr#Sense
Verweking-nl#Sense
Water softening-en#Sense