Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/3606002
Is Reference of Birefringent polymer-en#Sense
Polymère biréfringent-fr#Sense
Polímero birrefringente-es#Sense
Polimero birifrangente-it#Sense
Zweibrechende Polymer-de#Sense