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21 Jan 1799 Jahr - 1799 Se deposita en los primeros archivos de Francia el primer prototipo del metro, formado por una regla de platino sin inscripciones ni marcas
Zugefügt zum Band der Zeit:
Metrología
By
Erick Piña
12 Jan 2018
0
0
1778
Datum:
21 Jan 1799 Jahr
Jetzt
~ 226 years ago
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