Quality of gravel resources in northwestern Pennsylvania
By: Jesse L. Craft.
Series: Information circular - Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey ; 86
Publisher: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey ; additional copies may be purchased from State Book Store
Published: 1979
Place of publication: Harrisburg
Language: eng
Number of pages: 54
Subjects: Gravel -- Pennsylvania.