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1by Hillis, Earl R.“... used to fly around Antarctica – radar (APS-42), N-1 Gyro, Periscopic Sextant, Sun Compass, Ground...”
Published 2010
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2by Vaughan, Norman D.“... with a compass rose attached to his ski and another compass on the sled. Wintering over in Antarctica...”
Published 2005
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3by Roscoe, John Hobbie, 1919-“... flight directions accurately. The compasses were off on the planes. For safety reasons two R4D aircraft...”
Published 2007
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Other/Unknown Material