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1 Jan 1980 Jahr - Fim do processo de padronização da frequência em 60 Hz.
Zugefügt zum Band der Zeit:
Principais Marcos do Setor Elétrico Brasileiro
By
Eudes de Almeida
8 Dez 2018
0
0
512
Datum:
1 Jan 1980 Jahr
Jetzt
~ 45 years ago
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