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  1. 1
    by Mann, H. T. (Henry Thomas)
    Published 1976
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    Water treatment and sanitation : a handbook of simple methods for rural areas in developing countries, by H.T.Mann [and] D.Williamson.
  2. 2
    by Mann, H. T. (Henry Thomas)
    Published 1976
    Subjects “...Water Purification Handbooks, manuals, etc....”
    Book
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    Water treatment and sanitation : a handbook of simple methods for rural areas in developing countries /

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