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Percy Frankland

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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
Micro-Organisms in Water Their Significance, Identification and Removal, Together with an Account of the Bacteriological Methods Employed in Their In