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  1. Age and area; a study in geographical distribution and origin of species,
    By: Willis, J. C.
    Publication info: Cambridge [Eng.]The University press,1922.
    Contributed by: Wellesley College Library (archive.org)
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  2. Age and area; a study in geographical distribution and origin of species, by J. C. Willis, with chapters by Hugo de Vries, H. B. Guppy, Mrs. E. M. Reid, James Small.
    By: Willis, J. C.
    Publication info: Cambridge [Eng.]The University Press,1922.
    Contributed by: NCSU Libraries (archive.org)
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  3. Agriculture in the tropics; an elementary treatise, by J. C. Willis.
    By: Willis, J. C.
    Edition: 3d ed., rev.
    Publication info: Cambridge,University Press,1922.
    Contributed by: University of California Libraries (archive.org)
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  4. Agriculture in the tropics; an elementary treatise, by J. C. Willis.
    By: Willis, J. C.
    Publication info: Cambridge,University press,1909.
    Contributed by: University of California Libraries (archive.org)
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  5. Agriculture in the tropics; an elementary treatise, by J.C. Willis.
    By: Willis, J. C.
    Edition: 2d ed., rev.
    Publication info: Cambridge [Eng.] :The University press,1914.
    Contributed by: University of California Libraries (archive.org)
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  6. The course of evolution by differentiation or divergent mutation rather than by selection, by J. C. Willis.
    By: Willis, J. C.
    Publication info: Cambridge [Eng.]The University press;1940.
    Contributed by: MBLWHOI Library, Woods Hole
    BHL Collections: MBLWHOI Library, Woods Hole
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  7. A dictionary of the flowering plants and ferns, by J. C. Willis.
    By: Willis, J. C.
    Edition: 4th ed., rev. and rewritten.
    Publication info: CambridgeThe University Press,1919
    Contributed by: MBLWHOI Library, Woods Hole
    BHL Collections: MBLWHOI Library, Woods Hole
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  8. A revised catalogue of the indigenous flowering plants and ferns of Ceylon / by J.C. Willis [and M. Willis] .
    By: Willis, J. C. - Willis, M.
    Publication info: Colombo, Ceylon :H.C. Cottle, Govt. Printer,1911.
    Contributed by: Mertz Library, The New York Botanical Garden
    BHL Collections: New York Botanical Garden
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