Topic
Greenland
Geology
52
Biology
49
Periodicals
46
Public health
46
Iceland
31
Arctic regions
18
Natural history
18
Hydrography
16
Scientific Expeditions
16
Description and travel
15
Plants
13
Fisheries
12
Ingolf (Ship)
12
Marine biology
12
Denmark
11
Eskimos
11
Grönland
8
cod
8
Discovery and exploration
7
1674-1743
6
Anderson
6
Eskimo languages
6
Geophysics
6
Johann
6
Missions
6
Antarctica
5
Arctic
5
Inuit
5
redfish
5
1837-1908
4
1869-1870
4
1869-1870)
4
Antiquities
4
Biography
4
Crustacea
4
Deutsche Nordpolar-Expedition
4
Entomostraca
4
Geodesy
4
Geomagnetism
4
German
4
Germania (Schooner)
4
Hansa (Schooner)
4
History
4
Indian linguistics
4
Karl
4
Koldewey
4
Meteorology
4
Shipwreck survival
4
Technical reports
4
more ...