Mineral resources of the Elders Ridge quadrangle, Pennsylvania /

Economic geology of the Amity quadrangle, eastern Washington County, Pennsylvania /
by: Clapp, Frederick G. (Frederick Gardner), 1879-1944
Published: (1907)

Geology and mineral resources of the Middletown quadrangle, Pennsylvania /
by: Stose, George Willis, 1869-1960
Published: (1933)

Report /
Published: (1910)

Geology and mineral resources of the Washingtonville and Millville quadrangles : Montour, Columbia, and Northumberland counties, Pennsylvania /
by: Way, John H.
Published: (1993)

Geology and mineral resources of the Millerstown Quadrangle, Perry, Juniata, and Snyder Counties, Pennsylvania /
by: Faill, Rodger T.
Published: (1974)

Geology and mineral resources of the Quakertown-Doylestown district, Pennsylvania and New Jersey /
by: Bascom, F. (Florence), 1862-1945, et al.
Published: (1931)

Geology and mineral resources of the Blandburg, Tipton, Altoona, and Bellwood quadrangles : Blair, Cambria, Clearfield and Centre counties, Pennsylvania /
by: Faill, Rodger T.
Published: (1989)

Economic geology of the Beaver Quadrangle, Pennsylvania : (southern Beaver and northwestern Allegheny counties) /
by: Woolsey, Lester Hood, 1877-1961
Published: (1906)

Geology and mineral resources of the Sabula and Penfield quadrangles, Clearfield, Elk, and Jefferson Counties, Pennsylvania /
by: Berg, Thomas M.
Published: (1976)

A syllabus of Pennsylvania geology and mineral resources /
by: Ashley, Geo. H. (George Hall), 1866-1951
Published: (1931)

Geology and mineral resources of the Brodheadsville quadrangle, Monroe and Carbon Counties, Pennsylvania /
by: Berg, Thomas M.
Published: (1975)

Geology and mineral resources of the Berwick quadrangle, Luzerne and Columbia counties, Pennsylvania /
by: Inners, Jon D.
Published: (1978)

Geology and mineral resources of the southern half of the New Bloomfield quadrangle, Pennsylvania.
by: Dyson, James Lindsay, 1912-1967
Published: (1967)

Geology and mineral resources of Greene County, Pennsylvania /
by: Stone, Ralph W. (Ralph Walter), 1876-1964
Published: (1932)

Geology and mineral resources of the Philipsburg 7 1/2-minute quadrangle, Pennsylvania /
by: Glass, Gary B.
Published: (1974)

Geology and mineral resources of the Ramey and Houtzdale quadrangles, Clearfield and Centre counties, Pennsylvania /
by: Glass, Gary B.
Published: (1977)

Geology and mineral resources of the Lock Haven quadrangle, Clinton and Lycoming counties, Pennsylvania /
Published: (1977)

Geology and mineral resources of the Christmans and Pohopoco mountain quadrangles, Carbon and Monroe counties, Pennsylvania /
by: Sevon, William D.
Published: (1975)

Geology and mineral resources of the Hickory Run and Blakeslee quadrangles, Carbon and Monroe counties, Pennsylvania /
by: Sevon, William D.
Published: (1975)

Geology and mineral resources of the Lehighton and Palmerton quadrangles : Carbon and Northampton Counties, Pennsylvania /
by: Epstein, Jack Burton, 1935-
Published: (1974)

Geology and mineral resources of the Hazen, Falls Creek, Reynoldsville, and Dubois quadrangles, Clearfield and Jefferson Counties, Pennsylvania /
by: Glover, Albert D.
Published: (1978)

Geology and mineral resources of the Skytop quadrangle, Monroe and Pike Counties, Pennsylvania /
by: Sevon, William D.
Published: (1978)

Economic geology of the Kittanning and Rural valley quadrangles, Pennsylvania /
by: Butts, Charles, 1863-1946
Published: (1906)

Geology, mineral resources, and environmental geology of the Palmyra Quadrangle : Lebanon and Dauphin Counties /
by: Geyer, Alan R.
Published: (1970)

Atlas of Pennsylvania's mineral resources.
Published: (1964)

Geology and mineral resources of the Sinking Spring quadrangle, Berks and Lancaster Counties, Pennslyvania /
by: MacLachlan, David B.
Published: (1975)

Mineral resources of the North Pole Ridge Wilderness Study Area, Sherman and Gilliam Counties, Oregon /
by: Minor, Scott A.
Published: (1988)

Coal resources of Butler County, Pennsylvania /
by: Patterson, E. D. (Elmer Davisson), et al.
Published: (1971)

Geology and mineral resources of the Carlisle and Mechanicsburg quadrangles, Cumberland county, Pennsylvania /
Published: (1978)

Geology and mineral resources of the Temple and Fleetwood quadrangles, Berks County, Pennsylvania /
by: MacLachlan, David B.
Published: (1979)

Geology and mineral resources of the Reading and Birdsboro quadrangles, Berks County, Pennsylvania /
by: MacLachlan, David B.
Published: (1983)

Geology and mineral resources of the Oil City quadrangle, Venango County, Pennsylvania /
by: Ward, Albert N.
Published: (1979)

Geology and mineral resources of the Bloomsburg and Mifflinville quadrangles and part of the Catawissa quadrangle, Columbia County, Pennsylvania /
by: Inners, Jon D.
Published: (1981)

Geology and mineral resources of the southern half of the Penfield 15-minute quadrangle, Pennsylvania /
by: Edmunds, William E.
Published: (1973)

Geology and mineral resources of the Montoursville North and Huntersville quadrangles, Lycoming County, Pennsylvania /
by: Wells, Richard B.
Published: (1980)

Bedrock geology and mineral resources of the Linden and Williamsport Quadrangles, Lycoming County, Pennsylvania /
by: Faill, Rodger T.
Published: (1977)