Tyrone quadrangle
Subtitle: geology and mineral resources
By: by Charles Butts ... F.M. Swartz and Bradford Willard ...
Contributors: Swartz, Frank M. (Frank McKim), 1899-1982; Willard, Bradford, 1894-1973, author; Geological Survey (U.S.)
Series: Pennsylvania. Geological survey. Fourth series. Topographic and geologic atlas of Pennsylvania -- no. 96; Pennsylvania Geological Survey -- no. 96.
Publisher: Department of Internal Affairs, Topographic and Geologic Survey
Published: 1939
Place of publication: Harrisburg
Language: eng
Number of pages: 123
Subjects: Geology; Mines and mineral resources
Notes: Prepared in cooperation between the United States Geological survey and the Pennsylvania Topographic and geologic survey.

Includes bibliographical references.