Comparative water-quality assessment of the Hai He River basin in the People's Republic of China and three similar basins in the United States /

by Domagalski, Joseph L.
[Reston, VA] : Denver, CO : U.S. Dept. of the Interior, U.S. Geological Survey ; For sale by U.S. Geological Survey, Information Services, 2001

Water quality in the Delmarva Peninsula, Delaware, Maryland, and Virginia, 1999-2001 /

by Denver, J. M., Ator, Scott W., Debrewer, Linda M., Ferrari, Matthew J., Barbaro, Jeffrey R. (Jeffrey Ralph), 1960-, Hancock, Tracy Connell, Brayton, Michael J., Nardi, Mark R.
Reston, Va. : Denver, CO : U.S. Department of the Interior, U.S. Geological Survey ; For sale by U.S. Geological Survey, Information Services, 2004