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Екатеринбург
Екатеринбург
-13...-8° C
Название: Earth Impacts as a Threat to Civilization
Категория: Рефераты
Предмет: Авиация и космонавтика
Описание:
In recent years we get more & more facts showing that the present appearance of our planet was formed not only by slow evolutionary processes, like wind erosion, but also by gigantic natural cataclysms.
Последнее добавление
12.03.2013
Авиация и космонавтика