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jan 1, 1640 - 中国徐霞客著《徐霞客游记》，最早记载了岩溶地貌的考察和研究。
Description:
1640年中国徐霞客著《徐霞客游记》，最早记载了岩溶地貌的考察和研究。
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鱼
2 May 2023
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Date:
jan 1, 1640
Now
~ 386 years ago
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