Glover, A. D. (1987). Coal resources of Clarion County, Pennsylvania. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topography and Geologic Survey.
Chicago Style (17th ed.) CitationGlover, Albert D. Coal Resources of Clarion County, Pennsylvania. Harrisburg: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topography and Geologic Survey, 1987.
MLA (9th ed.) CitationGlover, Albert D. Coal Resources of Clarion County, Pennsylvania. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topography and Geologic Survey, 1987.
Warning: These citations may not always be 100% accurate.