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Filters: Keyword is ceramic filters and Author is IRC International Water and Sanitation Centre, The Hague, NL  [Clear All Filters]
1973
IRC International Water and Sanitation Centre, The Hague, NL, «The purification of water on a small scale», vol. no. 3. IRC, The Hague, The Netherlands, p. 19 p.: fig., 1973.
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