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  1. Soils and plant life as related to agriculture / J. C. Cunningham and W. H. Lancelot.
    By: Cunningham, Jules Cool, - Lancelot, William H.
    Publication info: New York :Macmillan,1915.
    Contributed by: Library of Congress
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  2. The weed flora of Iowa ...
    By: Pammel, L. H. - Cunningham, Jules Cool, - Hayden, Ada, - Kellogg, Harriette Susan, - King, Charlotte M, - Martin, John Nathan,
    Publication info: Des Moines,Iowa Geological Survey,1913.
    Contributed by: Library of Congress
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