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  1. Critical Trends Assessment Program : 2001 report.
    By: Illinois. Dept. of Natural Resources. - Critical Trends Assessment Project. - Illinois. Natural History Survey Division. - Illinois. Office of Realty and Environmental Planning.
    Publication info: Springfield, Ill. :Illinois Dept. of Natural Resources,2002.
    Contributed by: University Library, University of Illinois Urbana Champaign
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  2. Stream monitoring manual / Illinois Department of Natural Resources, Office of Realty and Environmental Planning, Division of Energy and Environmental Assessment.
    By: Illinois. Division of Energy and Environmental Assessment. - Illinois RiverWatch Network. - Illinois. Office of Realty and Environmental Planning.
    Publication info: Springfield, Ill. :Illinois Dept. of Natural Resources, Office of Realty and Environmental Planning, Division of Energy and Environmental Assessment,1997.
    Contributed by: University Library, University of Illinois Urbana Champaign
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