IODP SEDIS - Thesaurus -

Pb-207/Pb-204
BT	isotopes
	.radioactive isotopes
	..Pb-207/Pb-204
BT	isotopes
	.stable isotopes
	..Pb-207/Pb-204
BT	metals
	.lead
	..Pb-207/Pb-204
RT	isotope ratios
	Pb-204
	Pb-207
SN	This term has multiple hierarchies.