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  1. Genera siphonogamarum ad systema Englerianum conscripta, ab autoribus C.G. de Dalla Torre et H. Harms.
    By: Dalla Torre, K. W. von - Harms, Hermann,
    Publication info: Lipsiae,G. Engelmann,1900-1907.
    Contributed by: Gerstein - University of Toronto (archive.org)
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