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25 avr. 1879 - Thomas Edison

Description:

Invented lightbulb, and electricity effects people's natural melatonin and seasonal sleep patterns

Ajouté au bande de temps:

History of Sleep study

ByK
9 oct. 2018
0
0
410

Date:

25 avr. 1879
Maintenaint
~ Il y a 146 ans
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