"Equinoccio y Solsticio" https://t.co/SJ9T2CzFTK #ciencia #feedly

"Equinoccio y Solsticio" https://t.co/SJ9T2CzFTK #ciencia #feedly

— XC (@xuancarlos) July 16, 2016

from Twitter https://twitter.com/xuancarlos

July 15, 2016 at 08:10PM
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