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AGE
4
Age, maximum/old
4
Age, minimum/young
4
Ammonium
4
Calcium
4
Chloride
4
DEPTH, ice/snow
4
Depth, bottom/max
4
Depth, top/min
Drilling/drill rig
4
GISP
4
Greenland Ice Core Projects GRIP/GISP/NGRIP
4
Magnesium
4
Nitrate
4
Potassium
Sampling/drilling ice
Sodium ion
4
Sulfate
4
Hydrogen peroxide
1
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