Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Απόδοση άρδευσης-el#Sense
Bewässerungsleistung-de#Sense
Eficacia del riego-es#Sense
Irrigation efficiency-en#Sense
Rendimento de rega-pt#Sense
Irrigatierendement-nl#Sense
Resa dell'irrigazione-it#Sense
Rendement de l'irrigation-fr#Sense
Nytteeffekt-da#Sense