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Coal resources of Butler County, Pennsylvania : part 1, Coal crop lines, mined-out areas, and structure contours /

Main Author:
Dodge, Clifford H.
Other Authors:
Pennsylvania. Bureau of Topographic and Geologic Survey.
Format:
Book
Language:
English
Subjects:
Coal Geology Pennsylvania Butler County
Coal mines and mining Pennsylvania Butler County
View in NAL's Catalog:
CAT86871685