mineral industry of Pennsylvania in 1987
By: L.J. Prosser, Jr., Robert C. Smith, II.
Contributors: Smith, Robert C.; Pennsylvania. Bureau of Topographic and Geologic Survey
Series: Information circular -- 98; Information circular (Pennsylvania. Bureau of Topographic and Geologic Survey) -- 98..
Publisher: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey
Published: 1990
Place of publication: [Harrisburg, Pa.]
Language: eng
Subjects: Mineral industries -- Pennsylvania.; Mines and mineral resources -- Pennsylvania.
Notes: Cover title.

"Chapter from the current Bureau of Mines minerals yearbook ... " --P. [ii]

Includes bibliographical references.