Sea surface temperatures observed in the Greenland Sea during the German
North Polar Expedition of 1869. In: Petermann's Geographische Mittheilungen
, Plate 18, 1869. Showing isotherms, the course of the German
Expedition in the summer of 1868, the courses of the ALBERT and BIENENKORB
in 1869 and the extent of sea ice encountered by various cruises.
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