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Henrietta Leavitt 1868-1921 (28 sett 1868 anni – 6 gen 1921 anni)

Aggiunto al nastro di tempo:

The Glass Universe

BySteve Danford

29 gen 2018

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555

Data:

28 sett 1868 anni

6 gen 1921 anni

~ 52 years

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