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  1. Acute lethality data for Ontario's inorganic chemical manufacturing sector effluents covering the period from June 1990 to November 1990 : report /
    By: Lee, J. T. - Ontario. Aquatic Toxicity Unit.
    Publication info: [Toronto] :Aquatic Toxicity Unit, Ontario Ministry of the Environment,1993.
    Holding Institution: Ontario Ministry of the Environment (archive.org)
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  2. Acute lethality data for Ontario's organic chemical manufacturing sector effluents covering the period from April 1990 to September 1990 : report /
    By: Lee, J. T. - Ontario. Aquatic Toxicity Unit.
    Publication info: [Toronto] :Aquatic Toxicity Unit, Ontario Ministry of Environment and Energy,1993.
    Holding Institution: Ontario Ministry of the Environment (archive.org)
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  3. Acute lethality data for Ontario's organic chemical manufacturing sector effluents covering the period from October 1989 to March 1990 /
    By: Lee, J. T. - Ontario. Aquatic Toxicity Unit.
    Publication info: [Toronto?] :Aquatic Toxicity Unit, Ontario Ministry of the Environment,1991.
    Holding Institution: Ontario Ministry of the Environment (archive.org)
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