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  1. Gas treatment for scale insects; treating of the operations of the Horticultural Board's fumigating outfit, the applicability of the fumigation process in Cape Colony, and embodying a full description of the equipment necessary for fumigation with hydrocyanic acid gas.
    By: South Africa. Horticultural Board. - Lounsbury, Charles Pugsley,
    Publication info: Cape Town, Townshend,Taylor & Snashall,1897.
    Contributed by: University of California Libraries (archive.org)
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