SEDIS - Thesaurus

Ar-39
BT	isotopes
	.radioactive isotopes
	..Ar-39
BT	noble gases
	.argon
	..Ar-39
RT	Ar-40/Ar-39
SN	Artificial. This term has multiple hierarchies.

Ar-39/Ar-40
USE	Ar-40/Ar-39