Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/52
Is Reference of Problema do ambiente-pt#Sense
Contrainte d'environnement-fr#Sense
Miljøhensyn på energiområdet-da#Sense
Environmental constraint-en#Sense
Περιβαλλοντικοί περιορισμοί-el#Sense
Problema de medio ambiente-es#Sense
Contrainte environnementale-fr#Sense
Milieueis-nl#Sense
Vincolo ambientale-it#Sense