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contribuyo a la elctricidad creando la lámpara encandecente.
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contrbuyo a la electricidad la corriente alterna.
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creo la comicion de energia hidroelctrica
A list shows items. A timeline shows sequence.
Use Timetoast to make dates, milestones, and turning points easier to understand in a clear visual format. Timetoast is a timeline maker for work, school, research, and stories.