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Проведение 10-верстной геологической съемки территории страны (31 mar 1919 ano – 31 mar 1930 ano)

Descrição:

Ее результатом стало открытие ряда полезных ископаемых.

Adicionado na linha do tempo:

География

11 nov 2019

0

0

423

Data:

31 mar 1919 ano

31 mar 1930 ano

~ 11 years

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