Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Produzione per ettaro-it#Sense
Παραγωγή ανά εκτάριο-el#Sense
Production à l'hectare-fr#Sense
Hektarudbytte-da#Sense
Output per hectare-en#Sense
Hektarerzeugung-de#Sense