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  1. Micro-organisms in water : their significance, identification and removal /
    By: Frankland, Percy, - Frankland, Grace C.
    Publication info: London :Longmans,1894.
    Contributed by: Cornell University Library
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  2. Micro-organisms in water : their significance, identification and removal, together with an account of the bacteriological methods employed in their investigaion, specially designed for the use of those connected with the sanitary aspects of water-supply /
    By: Frankland, Percy, - Frankland, Grace Coleridge Toynbee
    Publication info: London :Longmans, Green,1894
    Contributed by: University of California Libraries (archive.org)
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