EarthWorks Geospatial Catalog

Greater Pittsburgh region, thickness of rocks over the Upper Freeport coal [cartographic material] / by J.L. Craft, L. Heyman, and R.G. Piotrowski ; prepared by the Pennsylvania Bureau of Topographic and Geologic Survey in cooperation with the United States Department of the Interior, Geologic Survey ; Lajos J. Balogh, cartographic draftsman.

Description
Covers Allegheny, Armstrong, Beaver, Butler, Washington, and Westmoreland Counties. Relief shown by contours and spot heights. "Contour interval 100 feet." "Bureau of Topographic and Geologic Survey, Commonwealth of Pennsylvania, Department of Environmental Resources"--Top margin. "UTM grid." Location map on envelope. Includes text, vertical geologic column, index of USGS topographic sheets, and location map.
Publisher
Pennsylvania. Bureau of Topographic and Geologic Survey
Year
1976-01-01T00:00:00Z
Held by
MIT
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