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Start Over Subjects Water Purification -- methods ✖Remove constraint Subjects: Water Purification -- methods Titles The efficacy of filters and other means employed to purify drinking water: a bacteriological study ✖Remove constraint Titles: The efficacy of filters and other means employed to purify drinking water: a bacteriological study Dates by Range 1850-1899 ✖Remove constraint Dates by Range: 1850-1899

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  • The efficacy of filters and other means employed to purify drinking water: a bacteriological study1