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  1. Technical report : Illinois natural areas inventory / by the Department of Landscape Architecture, Univeristy of Illinois, Urbana-Champaign, and the Natural Land Institute, Rockford, Illinois.
    By: University of Illinois at Urbana-Champaign. - Corbin, Calvin C. - White, John - Illinois Natural Areas Inventory. - Illinois. - Natural Land Institute (Rockford, Ill.)
    Publication info: Urbana :Dept. of Landscape Architecture, University of Illinois and Natural Land Institute,1978.
    Contributed by: University of Illinois Urbana Champaign
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