Coal resources of Butler County, Pennsylvania
Subtitle: part 1, Coal crop lines, mined-out areas, and structure contours
By: compiled by Clifford H. Dodge.
Contributors: Pennsylvania. Bureau of Topographic and Geologic Survey
Series: Mineral resource report -- 90, pt. 1
Publisher: Pennsylvania Geological Survey
Published: 1985
Place of publication: Harrisburg
Language: eng
Number of pages: 112
Subjects: Coal -- Geology -- Pennsylvania -- Butler County.; Coal mines and mining -- Pennsylvania -- Butler County.
Notes: Loose leaf.