Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811
Is Reference of EPN-it#Sense
EPN-de#Sense
O-etil-O-p-nitrofenil-benzen-tiofosfonato-it#Sense
O-Aethyl-O-p-nitrophenyl-O-phenylthionophosphat-de#Sense