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1 янв 1906 г. - 1906 Se inició la normalización internacional en el ámbito de la electrotécnica, a través de la Comisión Internacional de Elecrotécnica.
Добавлено на ленту времени:
Metrología
By
Erick Piña
12 янв 2018
0
0
1622
Дата:
1 янв 1906 г.
Сейчас
~ 119 г назад
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