Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/4821002
Is Reference of Sistema portuario-es#Sense
Λιμενικό σύστημα-el#Sense
Sistema portuário-pt#Sense
Sistema portuale-it#Sense
Havnesystem-da#Sense
Port system-en#Sense
Système portuaire-fr#Sense