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  1. Micro-organisms in water : their significance, identification and removal /
    By: Frankland, Percy, - Frankland, Grace C. (Grace Coleridge Toynbee),
    Publication info: London :Longmans,1894.
    Holding Institution: 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
    Holding Institution: University of California Libraries (archive.org)
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