Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Anno internazionale del Pianeta Terra-it#Sense
Année internationale de la planète Terre-fr#Sense
IYPE-en#Sense
IYPE-it#Sense
Διεθνές Έτος του πλανήτη γή-el#Sense
International Year of Planet Earth-en#Sense