Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/2841004
Is Reference of Closed system-en#Sense
Closed system-de#Sense
Uzavretý systém-sk#Sense
Closed system-it#Sense
Zárt rendszer-hu#Sense
Sistema cerrado-es#Sense
Système fermé-fr#Sense
Κλειστό σύστημα-el#Sense
Lukket sysstem-da#Sense
Sistema fechado-pt#Sense
Uždara sistema-lt#Sense