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04.02.05. Downhole
3
and other methods
3
ice thickness measurements
3
radio echo sounding
3
radio glaciology
3
radioactivity
3
remote sensing
3
02.03.09. Instruments and techniques
1
02.03.99. General or miscellaneous
1
glacier ice tongues
1
ground penetrating radar
1
internal layering
1
radioglaciology
1
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