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Eugene Wasdin
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Report of the Filtration Commission: Of the City of Pittsburgh, Pennsylvania ...
Robert Pitcairn, William Thompson Sedgwick, William R . Copeland, Pittsburgh (Pa.). Filtration Commission, Allen Hazen, Emil Kuichling, Morris Knowles, Walther Riddle, Eugene Wasdin · The Commission
460 sayfa · 1899
Water-supply / Filters and filtration