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  1. 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 Libraries (archive.org)
  2. By: Zheng, Danrui. - Alberta. Air Issues and Monitoring Branch. - Alberta. Environmental Regulatory Service. Chemicals Assessment and Management Division. - Clean Air Strategic Alliance.
    Publication info: Edmonton :Alberta Environmental Protection, Environmental Regulatory Service, Chemicals Assessment and Management Division, Air Issues and Monitoring Branch,1997.
    Holding Institution: University of Alberta Libraries (archive.org)