IODP SEDIS - Thesaurus -

N-15
BT	isotopes
	.stable isotopes
	..N-15
BT	nitrogen
	.N-15
RT	N-15/N-14
SN	This term has multiple hierarchies.

N-15/N-14
BT	isotopes
	.stable isotopes
	..N-15/N-14
BT	nitrogen
	.N-15/N-14
RT	isotope ratios
	N-15
SN	This term has multiple hierarchies.