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发表于2024-11-09
Mountains and Valleys pdf epub mobi txt 电子书 下载 2024
Mountains and valleys, shaped over hundreds of millions of years by various geologic forces, encompass the highest and lowest places on Earth. Read how a volcano is born, why Mount Everest is still growing, and what might happen when Africa's greatest valley cracks apart.
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Mountains and Valleys pdf epub mobi txt 电子书 下载 2024