Topic
Arctic regions
8
Natural history
8
1837-1908
6
1869-1870
6
Deutsche Nordpolar-Expedition
6
Discovery and exploration
6
Geophysics
6
German
6
Karl
6
Koldewey
6
Scientific Expeditions
6
1869-1870)
4
Description and travel
4
Geodesy
4
Geology
4
Geomagnetism
4
Germania (Schooner)
4
Greenland
4
Hansa (Schooner)
4
Hydrography
4
Meteorology
4
Shipwreck survival
4
Technical reports
4
Africa
2
Animal behavior
2
Asia
2
Central
2
Kara Sea
2
Norway
2
Nova Zemlya (R.S.F.S.R)
2
Nova Zemlya (R.S.F.S.R.)
2
Siberia (Russia)
2
Svalbard
2
Svalbard (Norway)
2
Zoology
2