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Please read BHL's Acknowledgment of Harmful Content
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  1. By: United States. Forest Service. - United States. Forest Service. Pacific Northwest Region.
    Publication info: [Washington, D.C.?], U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Region, [1996?]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Air quality management  Cities and towns  Environmental protection  Forests and forestry  Growth  United States  
  2. By: Alberta. Environmental Sciences Division. - Clean Air Strategic Alliance.
    Publication info: Edmonton, Alberta Environment, Environmental Service, Environmental Sciences Division, 1999
    Holding Institution: University of Alberta Library
    Subjects: Acid deposition  Air  Air quality management  Alberta  Management  Measurement  Monitoring  Pollution  
  3. By: Alberta. Alberta Environment.
    Publication info: [Edmonton] Alberta Environment 2004
    Holding Institution: University of Alberta Library
    Subjects: Air  Air quality  Air quality management  Alberta  Effect of pollution on  Environmental aspects  Plants  Pollution  Standards  Sulfur dioxide  
  4. By: United States. Congress. House. Committee on Government Operations. - United States. Congress. House. Committee on Government Operations. Environment, Energy, and Natural Resources Subcommittee.
    Publication info: Washington, U.S. G.P.O, 1995
    Holding Institution: Boston Public Library
    Subjects: Air  Air quality management  Environmental monitoring  National parks and reserves  Physiological effect  Pollution  Prevention  United States  Wilderness areas