Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Environmental standard-en#Sense
Περιβαλλοντικά πρότυπα-el#Sense
Norma de ambiente-pt#Sense
Norma in materia di ambiente-it#Sense
Umweltnorm-de#Sense
Miljøstandard-da#Sense
Milieunorm-nl#Sense
Norma medioambiental-es#Sense
Norme environnementale-fr#Sense