Office of Wetlands, Oceans and Watersheds, EPA Office of Water and National Exposure Research Laboratory, EPA Office of Research and Development, U.S. Environmental Protection Agency; Office of Earth Science, National Aeronautics and Space Administration
prepared by University of Wisconsin--Superior and Great Lakes Environmental Center ; prepared for U.S. Environmental Protection Agency, Office of Water, Office of Science and Technology, Health and Ecological Criteria Division; Office of Research and Development, Environmental Research Laboratories