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By: Mark E. Taylor & Associates. - Ontario. Ministry of the Environment. - Metropolitan Toronto and Region Conservation Authority.Edition:Publication info: Toronto, Ont, Mark E. Taylor & Associates, 1992Volume:Series:Holding Institution: Ontario Ministry of the EnvironmentSubjects: Biological treatment Constructed wetlands Function Ontario Purification Sewage Sewage lagoons Storm sewers Storm water retention basins Urban runoff Water Water quality management WetlandsBHL Collections:
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By: Eby, Harry J. - Hsingh, V. P.Edition:Publication info: Washington, D.C, Agricultural Research Service, U.S. Dept. of Agriculture, 1972Volume: no.142Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: Biological treatment Cyanobacteria Purification Sewage Sewage lagoonsBHL Collections:
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By: California. Department of Water Resources. - Brown, Randall L.Edition:Publication info: Sacramento], For sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington, 1971Volume: no.174-10Series:Holding Institution: University of California LibrariesSubjects: Algae Biological treatment Nitrates Nitrogen removal Purification WaterBHL Collections:
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By: California. Department of Water Resources. - United States. Environmental Protection Agency. - United States. Bureau of Reclamation.Edition:Publication info: Washington, For sale by the Supt. of Docs., U.S. Govt. Print. Off, 1971Volume: no.174-16Series:Holding Institution: University of California LibrariesSubjects: Algae Biological treatment Nitrates Purification WaterBHL Collections:
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By: Rideal, Samuel,Edition: 3d ed.Publication info: London, The Sanitary publishing co, 1906Volume:Series:Holding Institution: University of Toronto - Gerstein Science Information CentreSubjects: Bacteria Biological treatment Sewage disposal Sewage PurificationBHL Collections: