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Recent Decline in Public Transportation Ridership: Hypotheses, Methodologies, and Detailed City-by-City Results 科技报告
来源:National Academies Press. 出版年: 2022
作者:  National Research Council
收藏  |  浏览/下载:0/0  |  提交时间:2022/02/23
Biodiversity at Risk: Today's Choices Matter 科技报告
来源:National Academies Press. 出版年: 2022
作者:  National Academies of Sciences, Engineering, and Medicine
收藏  |  浏览/下载:2/0  |  提交时间:2022/02/16