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发表于2025-01-10
Theory of the Earth, Volume II pdf epub mobi txt 电子书 下载 2025
The first object now to be examined, in confirmation of the theory, is that change of posture and of shape which is so frequently found in mountainous countries, among the strata which had been originally almost plain and horizontal.
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Theory of the Earth, Volume II pdf epub mobi txt 电子书 下载 2025