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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Eby, Harry J. - Hsingh, V. P.
    Publication info: Washington, D.C, Agricultural Research Service, U.S. Dept. of Agriculture, 1972
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Biological treatment  Cyanobacteria  Purification  Sewage  Sewage lagoons  
  2. By: Bradford, David F. - California. Department of Water Resources.
    Publication info: Los Angeles, CA, Environmental Science & Engineering Program, University of California, [1989]
    Holding Institution: U.S. Government Printing Office
    Subjects: California  Drainage  Effect of water pollution on  Environmental aspects  Evaluation  Safety measures  San Joaquin Valley  Selenium in agriculture  Sewage lagoons  Water birds  Waterfowl  
  3. By: Mark E. Taylor & Associates. - Ontario. Ministry of the Environment. - Metropolitan Toronto and Region Conservation Authority.
    Publication info: Toronto, Ont, Mark E. Taylor & Associates, 1992
    Holding Institution: Ontario Ministry of the Environment
    Subjects: Biological treatment  Constructed wetlands  Function  Ontario  Purification  Sewage  Sewage lagoons  Storm sewers  Storm water retention basins  Urban runoff  Water  Water quality management  Wetlands