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12 sett 431 anni a. C. - Основные полезные ископаемые силурийского периода: железные руды, золото, медь, горючие сланцы, фосфориты и барит.

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Водопьянова Олеся ЭБ17-02Б

ByОлеся Водопьянова

28 ott 2018

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607

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12 sett 431 anni a. C.

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~ 2459 years ago

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