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  1. The changing Illinois environment : critical trends : technical report of the Critical Trends Assessment Project.
    By: Critical Trends Assessment Project. - Illinois.
    Publication info: Springfield, Ill. :Ill. Dept. of Energy and Natural Resources,1994.
    Contributed by: University of Illinois Urbana Champaign
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  2. Critical Trends Assessment Program : 2001 report.
    By: Illinois. - Critical Trends Assessment Project.
    Publication info: Springfield, Ill. :Illinois Dept. of Natural Resources,2002.
    Contributed by: University of Illinois Urbana Champaign
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  3. Critical trends assessment Program 2002 report
    By: Illinois. - Critical Trends Assessment Project.
    Publication info: [Illinois] :Illinois Dept. of Energy and Natural Resources, Office of Realty and Environmental Palnning :2002
    Contributed by: University of Illinois Urbana Champaign
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  4. Critical trends assessment Program 2003-04 report
    By: Illinois. - Critical Trends Assessment Project.
    Publication info: [Illinois] :Illinois Dept. of Natural Resources, Office of Realty and Environmental Palnning :Dec. 2004
    Contributed by: University of Illinois Urbana Champaign
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  5. Illinois River Bluffs area assessment / Illinois Department of Natural Resources, Office of Scientific Research and Analysis, [and the] State Geological Survey Division.
    By: Illinois. - Critical Trends Assessment Project. - Illinois State Geological Survey.
    Publication info: Springfield, Ill. :Illinois Dept. of Natural Resources,1998-
    Contributed by: University of Illinois Urbana Champaign
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  6. Stream monitoring manual / Illinois Department of Natural Resources, Office of Realty and Environmental Planning, Division of Energy and Environmental Assessment.
    By: Illinois. - Critical Trends Assessment Project. - Illinois RiverWatch Network.
    Edition: 3rd ed.
    Publication info: Springfield, Ill. :Illinois Dept. of Natural Resources, Office of Realty and Environmental Planning, Division of Energy and Environmental Assessment,[1998]
    Contributed by: University of Illinois Urbana Champaign
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