National Transportation Atlas Database (NTAD): Ports 1995-Present Datasets
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下载链接：
https://rosap.ntl.bts.gov/view/dot/53567
下载链接
链接失效反馈官方服务：
资源简介：
Data is currently listed 1995-2015 and later datasets will be listed as they become available.
提供机构：
Bureau of Transportation Statistics
创建时间：
2021-02-09
