Description: Coal producing regions of the United States. Place Names: Minerals, coa ISO Topic Categories: boundaries,
geoscientificInformation,
inlandWaters,
location,
oceans Keywords: Coal Mining Regions of the United States, physical, statistical, kResources, industry, boundaries,
geoscientificInformation,
inlandWaters,
location,
oceans, Unknown, 1906 Source: Alexis Everett Frye, Frye's First Steps in Geography (Boston, MA: Ginn and Company, 1906) 62 Map Credit: Courtesy the private collection of Roy Winkelman |
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