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  1. Pond life /
    By: Ash, Edward C. (Edward Cecil),
    Publication info: London :T.C. & E.C. Jack;[1913]
    Holding Institution: Wellcome Library (archive.org)
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  2. Pond life /
    By: Ash, Edward C. (Edward Cecil),
    Publication info: London :T.C. & E. Jack,[1913]
    Holding Institution: University of Toronto - Gerstein Science Information Centre
    View Book