(2000). Water quality in the Allegheny and Monongahela River Basins: Pennsylvania, West Virginia, New York, and Maryland, 1996-98. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey.
Chicago Style CitationWater Quality in the Allegheny and Monongahela River Basins: Pennsylvania, West Virginia, New York, and Maryland, 1996-98. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey, 2000.
MLA CitationWater Quality in the Allegheny and Monongahela River Basins: Pennsylvania, West Virginia, New York, and Maryland, 1996-98. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey, 2000.
Warning: These citations may not always be 100% accurate.