Narrow Search
1837-1908
1869-1870
7
Deutsche Nordpolar-Expedition
7
Karl
7
Koldewey
7
Arctic regions
6
Discovery and exploration
6
Geophysics
6
German
6
Natural history
6
1869-1870)
4
Geodesy
4
Geology
4
Geomagnetism
4
Germania (Schooner)
4
Greenland
4
Hansa (Schooner)
4
Hydrography
4
Meteorology
4
Scientific Expeditions
4
Shipwreck survival
4
Technical reports
4
Discovery and exploration--German
1
see all ...