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  1. The drug plants of Illinois /
    By: Tehon, L. R. (Leo Roy),
    Publication info: Urbana, Ill. :Natural History Survey Division,1951.
    Holding Institution: University Library, University of Illinois Urbana Champaign
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  2. Fieldbook of native Illinois shrubs,
    By: Tehon, L. R. (Leo Roy), - Illinois. Natural History Survey Division.
    Publication info: Urbana,Natural History Survey Division,1942.
    Holding Institution: MBLWHOI Library
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  3. Peach yellows in Illinois,
    By: Tehon, L. R. (Leo Roy), - Stout, G. L.
    Publication info: Urbana,State Natural History Survey Division,1929.
    Holding Institution: University Library, University of Illinois Urbana Champaign
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