Geology and mineral resources of the Sabula and Penfield quadrangles, Clearfield, Elk, and Jefferson Counties, Pennsylvania /

by Berg, Thomas M
Published 1976

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

by Glover, Albert D
Published 1978

Report of progress in Jefferson County /

by Platt, W. G (William Greenough)
Published 1881

Bedrock geologic map, coal-resource maps, and digital datasets of the Brandy Camp quadrangle, Elk, Jefferson, and Clearfield counties, Pennsylvania /

by Dodge, Clifford H, Dodge, Clifford H
Published 2004

Geology and mineral resources of the Sabula and Penfield quadrangles, Clearfield, Elk, and Jefferson Counties, Pennsylvania /

by Berg, Thomas M, Berg, Thomas M, Glover, Albert D., Glover, Albert D.
Published 1976

Geology and mineral resources of the Sabula and Penfield quadrangles, Clearfield, Elk, and Jefferson counties, Pennsylvania /

Published 1976

Smicksburg quadrangle : geology and mineral resources /

by Shaffner, Marchant N (Marchant Nissley), 1897-, Shaffner, Marchant N (Marchant Nissley), 1897-
Published 1946

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

Published 1978

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

by Glover, Albert D, Glover, Albert D, Bragonier, William A.
Published 1978

Bedrock geologic map, coal-resource maps, and digital datasets of the Brandy Camp quadrangle, Elk, Jefferson, and Clearfield counties, Pennsylvania

by Dodge, Clifford H
Published 2004

Report of progress in Jefferson County,

by Platt, William Greenough
Published 1881

Bedrock geologic map, coal-resource maps, and digital datasets of the Brandy Camp quadrangle, Elk, Jefferson, and Clearfield counties, Pennsylvania

by Dodge, Clifford H, Dodge, Clifford H
Published 2004

Smicksburg quadrangle : geology and mineral resources /

by Shaffner, Marchant N (Marchant Nissley), 1897-
Published 1946

Report of progress in Jefferson County,

by Platt, William Greenough, Platt, William Greenough
Published 1881

Sediment loads, discharges, and yields in the East Branch Mahoning Creek Basin, Clearfield and Jefferson Counties, Pennsylvania, June 1979 through September 1981 /

by Loper, Connie A
Published 1988

Report of progress in Jefferson County,

by Platt, W. G (William Greenough)
Published 1881