对历史地理学工作者研究历史时期的环境变迁及文物保护等方面具有重要的帮助。
Those studies are also very helpful for historical geography researchers to explore the changes of ancient environment.
对历史地理学工作者研究历史时期的环境变迁及文物保护等方面具有重要的帮助。
Those studies are also very helpful for historical geography researchers to explore the changes of ancient environment.
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