Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811001
Is Reference of PS-fr#Sense
Polystyren-da#Sense
Πολυστυρόλιο-el#Sense
Poliestireno-pt#Sense
Polystyrol-de#Sense
Polystirene-it#Sense
Poliestireno-es#Sense
Polaistiréin-ga#Sense
Polystyreen-nl#Sense
Polystyrène-fr#Sense
PS-de#Sense
Polistirolo-it#Sense
Polistirenas-lt#Sense
Polystyren-cs#Sense
Polystyrene-en#Sense