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  1. By: Illinois. Dept. of Natural Resources.
    Publication info: [Springfield, Ill.], Illinois Dept. of Natural Resources, [2007]
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Conservation of natural resources  Critical Trends Assessment Program  Dept. of Natural Resources  Ecosystem management  Illinois  Law and legislation  Research  Water conservation  Water quality management  Watersheds  
  2. By: Illinois. Dept. of Natural Resources.
    Publication info: [Springfield, Ill.], Illinois Dept. of Natural Resources, [2001]
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Conservation of natural resources  Critical Trends Assessment Program  Dept. of Natural Resources  Ecosystem management  Illinois  Law and legislation  Research  Water conservation  Water quality management  Watersheds