Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/52
Is Reference of Íonú an atmaisféir-ga#Sense
Ilmakehän puhdistuminen-fi#Sense
Atmospherical purification-en#Sense
Depuración de la atmósfera-es#Sense
Épuration de l'atmosphère-fr#Sense
Atmosfärisk rening-sv#Sense