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jan 1, 1930 - Analizador Diferencial (1930).

Description:

Vannevar Bush, media grados de cambio.

Added to timeline:

T1P1_1800_20181008023_Rivas Flores_Stephany

ByEmily Cortés

31 May 2021

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274

Date:

jan 1, 1930

Now

~ 96 years ago

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