IODP SEDIS - Thesaurus -

Leg 57
BT	Deep Sea Drilling Project
	.IPOD
	..Leg 57
NT	DSDP Site 438
	DSDP Site 439
	DSDP Site 440
RT	Northwest Pacific
SN	NW Pacific Ocean. Sites 438-441, near the Japan Trench. Added to Thesaurus in 1981.