Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Polycyclische aromatische Kohlenwasserstoffe-de#Sense
IPA-it#Sense
Idrocarburi policiclici aromatici-it#Sense
Polycyclic aromatics-en#Sense
PAK-de#Sense
Πολυκυκλικές αρωματικές ενώσεις-el#Sense