Sleep and activity patterns at South Pole station. A preliminary report.
D000222:Adaptation, Physiological; D000864:Antarctic Regions; D003081:Cold Climate; D003142:Communication; D004435:Eating; D006801:Humans; D008297:Male; D008433:Mathematics; D011932:Reading; D011996:Records; D011998:Recreation; D012890:Sleep; D013997:Time Factors; D014937:Work