Greater Pittsburgh region properties and uses of clays and shales
By: by Bernard J. O'Neill, Jr. ; prepared by the Pennsylvania Bureau of Topographic and Geologic Survey in cooperation with the United States Department of the Interior, Geological Survey.
Contributors: Pennsylvania. Bureau of Topographic and Geologic Survey.; Geological Survey (U.S.)
Series: Mineral resources report ;; 71
Publisher: The Bureau : may be purchased from State Book Store
Published: 1976
Place of publication: Harrisburg
Language: eng
Number of pages: 71
Subjects: Clay -- Pennsylvania -- Pittsburgh Metropolitan Area.; Shale -- Pennsylvania -- Pittsburgh Metropolitan Area.
Notes: Bibliography: p. 63-65.