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sep 12, 431 BC - Основные полезные ископаемые силурийского периода: железные руды, золото, медь, горючие сланцы, фосфориты и барит.
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Водопьянова Олеся ЭБ17-02Б
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Олеся Водопьянова
28 Oct 2018
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sep 12, 431 BC
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~ 2459 years ago
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