"Non-Radioactive Isotopes; Inorganic Or Organic Compounds Of Such Isotopes, Whether Or Not Chemically Defined (Excl. Heavy Water ""Deuterium Oxide"") : Nuclear Fuels Not Elsewhere Included Or Specified"
"Non-Radioactive Isotopes; Inorganic Or Organic Compounds Of Such Isotopes, Whether Or Not Chemically Defined (Excl. Heavy Water ""Deuterium Oxide"") : Other"