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  1. A descriptive manual of British land and fresh water shells, containing descriptions and figures of all the species,
    By: Dixon, George, zoologist. - Watson, Robert Boog.
    Publication info: Darlington,H. Penney, Printer,1858.
    Holding Institution: Smithsonian Libraries
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  2. On the marine mollusca of Maderia : with descriptions of thirty-five new species and an index-list of all known sea-dweling species of that island /
    By: Watson, Robert Boog.
    Publication info: [S.l.] :Linnean Society of London,[1897?]
    Holding Institution: Smithsonian Libraries
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