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Coal resources of Clarion County, Pennsylvania / compiled by Albert D. Glover.
Albert D. Glover · Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey
244 sayfa · 1987
Geology, Structural -- Pennsylvania -- Clarion County -- Maps
Geology and mineral resources of the southern half of the Clearfield 15-minute quadrangle, Pennsylvania
Albert D. Glover · PENNSYLVANIA GEOLOGICAL SURVEY
145 sayfa · 1970
Geology / Mines and mineral resources
Geology and mineral resources of the Hazen, Falls Creek, Reynoldsville, and Dubois quadrangles, Clearfield and Jefferson Counties, Pennsylvania
Albert D. Glover · Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey
131 sayfa · 1978
Geology / Mines and mineral resources