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17-167
1
17-171
1
3-15
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3-16
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3-17A
1
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3-21
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3-22
1
6-44
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6-47
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6-55
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7-64
1
8-71
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9-78
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9-80A
1
DRILL
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DSDP
1
Deep Sea Drilling Project
1
Drilling/drill rig
ELT21
1
ELT21.003-PC
1
ELT24
1
ELT24.010-PC
1
ELT24.016-PC
1
Eltanin
1
Glomar Challenger
1
Leg17
Leg3
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Leg6
1
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