Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/52
Is Reference of Purifying efficiency-en#Sense
Éifeachtúlacht an íonúcháin-ga#Sense
Reningseffekt-sv#Sense
Puhdistusteho-fi#Sense
Rendement de l'épuration-fr#Sense
Rendimiento de la depuración-es#Sense