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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Poirier, D. G.
    Publication info: [Toronto, Ont.], Environment Ontario, c1991
    Holding Institution: Ontario Ministry of the Environment
  2. By: Poirier, D. G. - Westlake, G. F.
    Publication info: [Toronto, Ont.], Environment Ontario, c1991
    Holding Institution: Ontario Ministry of the Environment