Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Lest fixe-fr#Sense
Permanent ballast-en#Sense
Zavorra permanente-it#Sense
Μόνιμο έρμα-el#Sense
Vaste ballast-nl#Sense
Fast ballast-da#Sense
Lastre fijo-es#Sense
Fester Ballast-de#Sense