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Проведение 10-верстной геологической съемки территории страны (31 marzo 1919 anni – 31 marzo 1930 anni)

Descrizione:

Ее результатом стало открытие ряда полезных ископаемых.

Aggiunto al nastro di tempo:

География

11 nov 2019

0

0

425

Data:

31 marzo 1919 anni

31 marzo 1930 anni

~ 11 years

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