Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of E 239-it#Sense
Esametilentetramina-it#Sense
Hexaméthylènetétramine-fr#Sense
E 239-fr#Sense
E 239-de#Sense
Hexamethylentretamin-de#Sense