Geology and mineral resources of the southern half of the Clearfield 15-minute quadrangle, Pennsylvania /

ανά Glover, Albert D.
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1970

Geology and mineral resources of the Hazen, Falls Creek, Reynoldsville, and Dubois quadrangles, Clearfield and Jefferson Counties, Pennsylvania /

ανά Glover, Albert D.
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1978

Geology and mineral resources of Fayette County, Pennsylvania /

ανά Hickok, W. O. (William Orville), 1905-
Harrisburg, Pa. : Pennsylvania Bureau of Topographic and Geologic Survey, 1940

Geology and mineral resources of Greene County, Pennsylvania /

ανά Stone, Ralph W. (Ralph Walter), 1876-1964
Harrisburg, Pa. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1932

Geology of the Great Basin /

ανά Fiero, Bill, 1936-
Reno : University of Nevada Press, 1986