Wyodak-Anderson coal zone study limit in the Powder River Basin, Wyoming and Montana (wabndg.shp)
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资源简介：
This ArcView shapefile contains a polygon representing the study area for the Wyodak-Anderson coal zone in the Powder River Basin, Wyoming and Montana. This theme was created specifically for the National Coal Resource Assessment in the Northern Rocky Mountains and Great Plains Region
创建时间：
1999-01-01
