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Antarctica -- Discovery and exploration -- Interviews
2
Birdsongs — Argentina
2
Birdsongs — Chile
2
Forest birds — Argentina — Identification
2
Forest birds — Argentina — Names
2
Forest birds — Chile — Identification
2
Forest birds — Chile — Names
2
Landscape and Nature - Wildlife
2
Mapuche Indians — Folklore
2
South America
2
Yahgan Indians — Folklore
2
birdsongs
2
1919- -- Interviews
1
1957-1958 -- Interviews
1
Antarctica -- Social life and customs
1
Cosmic rays -- Research -- History
1
Dale R. -- Interviews
1
Gray
1
International Geophysical Year
1
International Geophysical Year (IGY) (1957-1958)
1
Ionosphere -- Research -- History
1
Meteorology -- Antarctica -- Interviews
1
Operation Deepfreeze III
1
Reed
1
Thomas
1
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Antarctic
Argentina
Austral
2
Buff
2
Byrd
2
Ricardo
2
Argentine
1
Belgrano
1
Brice
1
Byrd Station
1
Edisto
1
Filchner Ice Shelf
1
Finn
1
General Belgrano
1
Little America
1
Mid-Atlantic Ridge
1
Morley
1
Morse
1
Reed Ridge
1
Ropar
1
Schlossbach
1
The Antarctic
1
Thiel Mountains
1
Tidd
1
Weddell
1
Weddell Sea
1
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