Norway
United States
Arctic
Russia
Lists
United Kingdom
Project-independent assessment
Edit summary: →Era of Satellites, Submarines and Icebreakers (1958–onward): SHEBA expedition added.
65.93% of edit
http://www.crrel.usace.army.mil/library/currentlits/citalert-11.pdf
Article
Loading article revision...
Source
Loading possible copyvio source...