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  1. Sewage and the bacterial purification of sewage.
    By: Rideal, Samuel,
    Edition: 3d ed.
    Publication info: LondonThe Sanitary publishing co.1906
    Contributed by: Gerstein - University of Toronto (archive.org)
    Subjects: Bacteria  Biological treatment  Sewage disposal  Sewage Purification  
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  2. Removal of nitrate by an algal system; phase II. Prepared by California Dept. of Water Resources.
    By: California. - United States. - United States.
    Publication info: Washington,For sale by the Supt. of Docs., U.S. Govt. Print. Off.,1971.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Algae  Biological treatment  Nitrates  Purification  Water  
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  3. Removal of nitrate by an algal system. [Author: Randall L. Brown.
    By: California. - Brown, Randall L.
    Publication info: Sacramento];For sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington,1971.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Algae  Biological treatment  Nitrates  Nitrogen removal  Purification  Water  
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  4. Constructed wetlands for stormwater management : a review / [prepared] for the Metropolitan Toronto and Region Conservation Authority & the Ontario Ministry of the Environment by Mark E. Taylor & Associates.
    By: Mark E. Taylor & Associates. - Metropolitan Toronto and Region Conservation Authority. - Ontario.
    Publication info: Toronto, Ont. :Mark E. Taylor & Associates,1992.
    Contributed by: Ontario Ministry of the Environment (archive.org)
    Subjects: Biological treatment  Constructed wetlands  Function  Ontario  Purification  Sewage  Sewage lagoons  Storm sewers  Storm water retention basins  Urban runoff  Water  Water quality management  Wetlands  
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