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  1. Official report of the Nature-Study Exhibition and conferences : held in the Royal Botanic Society's gardens, Regent's Park, London, July 23rd to August 5th, 1902.
    By: Nature-Study Exhibition - Cockburn, John A. - Medd, John C. - Nature-Study Exhibition Association. - Royal Botanic Society of London.
    Publication info: London :Blackie,1903.
    Contributed by: University of California Libraries (archive.org)
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