IODP SEDIS - Thesaurus -

helium
BT	noble gases
	.helium
NT	He-3
	He-4
	He-4/He-3
UF	He
RT	He/He
	isotopes
	helium gas
	U/He
SN	Chemical element. Use helium gas for helium as a commodity.

helium gas
RT	helium
SN	Commodity. See List C.