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Auxiliary sciences of history
›
Civilization
›
Learning and scholarship
›
Humanities
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Philosophy
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Cycles
›
Biological rhythms
›
Circadian rhythms
›
Sleep-wake cycle
›
Drowsiness
Drowsiness
Topic
sh93003994
·
id.loc.gov
Used for
Sleepiness
Somnolence
Broader Terms (1)
Sleep-wake cycle
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