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17-167
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17-171
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3-15
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3-17A
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6-44
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6-55
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7-64
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8-71
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9-78
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9-80A
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DRILL
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DSDP
Deep Sea Drilling Project
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Drilling/drill rig
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ELT21
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ELT21.003-PC
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ELT24
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ELT24.010-PC
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ELT24.016-PC
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Eltanin
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Glomar Challenger
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Leg17
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Leg3
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Leg6
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