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  1. The drug plants of Illinois / Leo R. Tehon ; drawings by Kay H. Wadsworth.
    By: Tehon, L. R.
    Publication info: Urbana, Ill. :Natural History Survey Division,1951.
    Contributed by: University of Illinois Urbana Champaign
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  2. Fieldbook of native Illinois shrubs, by Leo R. Tehon ...
    By: Tehon, L. R. - Illinois.
    Publication info: Urbana,Natural History Survey Division,1942.
    Contributed by: MBLWHOI Library
    BHL Collections: MBLWHOI Library, Woods Hole
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  3. Peach yellows in Illinois,
    By: Tehon, L. R. - Stout, G. L.
    Publication info: Urbana,State Natural History Survey Division,1929.
    Contributed by: University of Illinois Urbana Champaign
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