Temporal changes in sulfate, chloride, and sodium concentrations in four eastern Pennsylvania streams

by Barker, James L., 1936-
Published: U.S. Dept. of the Interior, Geological Survey ; Open-File Services Section, Western Distribution Branch, 1986

Water quality of the West Branch Lackawaxen River and limnology of Prompton Lake, Wayne County, Pennsylvania, October 1986 through September 1987

by Barker, James L., 1936-
Published: Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports Section [distributor], 1989

Effects of acidic precipitation on the water quality of streams in the Laurel Hill area, Somerset County, Pennsylvania, 1983-86

by Barker, James L., 1936-
Published: Dept. of the Interior, U.S. Geological Survey ; U.S. Geological Survey, Books and Open-File Reports Section [distributor], 1990

Water-quality assessment of Francis E. Walter reservoir, Luzerne and Carbon Counties, Pennsylvania

by Barker, James L., 1936-
Published: U.S. Geological Survey ; Open-File Service Section, Western Distribution Branch, U.S. Geological Survey, 1983

Temporal changes in sulfate, chloride, and sodium concentrations in four eastern Pennsylvania streams

by Barker, James L., 1936-
Published: U.S. Geological Survey, 1986

Effects of acidic precipitation on the water quality of streams in the Laurel Hill area, Somerset County, Pennsylvania, 1983-86

by Barker, James L., 1936-
Published: U.S. Geological Survey, 1990

Pennsylvannia ground-water quality

by Barker, James L., 1936-
Published: Dept. of the Interior, U.S. Geological Survey ; For sale by Open-File Services Section, 1987

Limnological survey of Sacony Creek Basin, Berks County, Pennsylvania

by Barker, James L., 1936-
Published: United States Department of the Interior, Geological Survey, 1976

Water-quality study of Tulpehocken Creek, Berks County, Pennsylvania, prior to Impoundment of Blue Marsh Lake

by Barker, James L., 1936-
Published: United States Department of the Interior, Geological Survey, 1977

Water quality of the West Branch Lackawaxen River and limnology of Prompton Lake, Wayne County, Pennsylvania, October 1986 through September 1987

by Barker, James L., 1936-
Published: U.S. Geological Survey, 1989

Water quality of the Upper West Branch Susquehanna River and tributary streams between Curwensville and Renovo, Pennsylvania, May and July 1984

by Hainly, Robert A.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports Section [distributor], 1993

Water quality of the Upper West Branch Susquehanna River and tributary streams between Curwensville and Renovo, Pennsylvania, May and July 1984

by Hainly, Robert A.,
Published: U.S. Department of the Interior, U.S. Geological Survey, 1993