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Arctic regions
6
Natural history
6
Scientific Expeditions
1837-1908
4
1869-1870
4
1869-1870)
4
Deutsche Nordpolar-Expedition
4
Discovery and exploration
4
Geodesy
4
Geology
4
Geomagnetism
4
Geophysics
4
German
4
Germania (Schooner)
4
Greenland
4
Hansa (Schooner)
4
Hydrography
4
Karl
4
Koldewey
4
Meteorology
4
Shipwreck survival
4
Technical reports
4
Description and travel
2
Kara Sea
2
Norway
2
Nova Zemlya (R.S.F.S.R)
2
Nova Zemlya (R.S.F.S.R.)
2
Svalbard
2
Svalbard (Norway)
2
Zoology
2
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