mineral industry of Pennsylvania in 1983
By: L.J. Prosser, Arthur A. Socolow, Robert C. Smith, II.
Contributors: Socolow, Arthur A.; Smith, Robert C.
Series: Information circular -- 94
Publisher: Bureau of Topographic and Geologic Survey
Published: 1985
Place of publication: [Harrisburg]
Language: eng
Number of pages: 14
Subjects: Mineral industries -- Pennsylvania.; Mines and mineral resources -- Pennsylvania.
Notes: Cover title.

Pennsylvania Geological Survey, fourth series.