Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/52
Is Reference of Ambient level-en#Sense
Ambient concentration-en#Sense
Concentration ambiante-fr#Sense
Grundkonzentration-de#Sense
Φυσιολογική συγκέντρωση ρύπων-el#Sense
Baggrundskoncentration-da#Sense
Bakgrundskoncentration-sv#Sense
Concentración de fondo-es#Sense
Concentração ambiente-pt#Sense
Background concentration-en#Sense
Achtergrondconcentratie-nl#Sense
Concentração de fundo-pt#Sense
Concentration de fond-fr#Sense
Taustapitoisuus-fi#Sense
Συγκέντρωση ρύπων-el#Sense
Hintergrundkonzentration-de#Sense
Omgevingsconcentratie-nl#Sense