1:2,000,000-scale Counties of the United States
收藏DataONE2016-10-29 更新2024-06-26 收录
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资源简介：
This coverage is of the county boundaries of the conterminous
United States. It was derived from the Digital Line Graph
(DLG) files representing the 1:2,000,000-scale map in the
National Atlas of the United States.
创建时间：
2016-10-29
