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Antarctica -- Discovery and exploration -- Interviews
2
Arctic regions -- Discovery and exploration -- Interviews
1
Bernard G. -- Interviews
1
Glacier (Icebreaker)
1
Ice breaking operations -- Antarctica
1
Jr -- Interviews
1
Koether
1
Operation Deep Freeze
1
Philip W.
1
Polar regions -- Discovery and exploration -- Interviews
1
Porter
1
United States. Navy -- Ice breaking operations -- Interviews
1
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