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Bering Sea
4
1681-1741
2
1733-1743)
2
Alaska
2
Aleutian Islands
2
Arctic Ocean
2
Bering
2
Bering Straits
2
Discovery and exploration
2
Field notes
2
Kamchatskaia ekspeditsiia
2
Natural history
2
Port Clarence
2
Travel
2
Umnak Island
2
United States Coast and Geodetic Survey
2
Vitus Jonassen
2
(2nd :
1
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