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Age
2
Alaska
2
Barrow
2
Barrow_S1-05
2
Barrow_S6-05/07
2
Barrow_S7/8-05
2
Carbon
2
DATE/TIME
2
DRILL
Depth
2
Drilling/drill rig
2
Event label
2
Sample ID
USA
2
bottom/max
2
comment
2
sediment/rock
top/min
2
Carbon/Nitrogen ratio
1
Cross polarization-magic angle spinning (CP-MAS) NMR spectroscopy
1
Nitrogen
1
Ratio
1
Soil horizon
1
organic
1
total
1
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