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Antarctica -- Discovery and exploration -- Interviews
2
Operation Deepfreeze (1955-1956)
2
1919- -- Interviews
1
1925- -- Interviews
1
Blades
1
Helicopters -- Cold weather operation
1
Ice breaking operations -- Antarctica -- Interviews
1
Jehu L.
1
Jones
1
McMurdo Station (Antarctica)
1
Newcomb
1
Polar regions -- Discovery and exploration -- Interviews
1
Robert C. -- Interviews
1
Walter R.
1
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