Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811001
Is Reference of Polietilene tereftalato-it#Sense
Polyéthylène téréphtalate-fr#Sense
PETP-en#Sense
Polyethylenterephthalat-de#Sense
Polyethylene terephtalate-en#Sense