Water quality in the Allegheny and Monongahela River Basins : Pennsylvania, West Virginia, New York, and Maryland, 1996-98 - Anderson, Robert M., 1961-; Geological Survey (U.S.) (Reston, VA : U.S. Geological Survey, National NAWQA Program ; Denver, CO : Free on application to the U.S. Geological Survey, Information Services, 2000)
Includes bibliographical references (p. 25-26).
Keywords: Water quality -- Allegheny River Watershed (Pa. and N.Y.); Water quality -- Monongahela River Watershed (W. Va. and Pa.)