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  1. Acidic precipitation in Ontario study (APIOS) project summaries : report prepared by Acidic Precipitation Office, Ontario Ministry of the Environment.
    By: Ontario.
    Publication info: [Toronto, Ont.] :Ontario Environment,1992-
    Contributed by: Ontario Ministry of the Environment (archive.org)
    Subjects: Acid pollution of rivers, lakes, etc  Acid precipitation (Meteorology)  Ontario  Periodicals  
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  2. Annual program report.
    By: Acidic Precipitation in Ontario Study - Ontario.
    Publication info: [Toronto] :Ministry of the Environment, A.P.I.O.S. Coordination Office.
    Contributed by: Ontario Ministry of the Environment (archive.org)
    Subjects: Acid pollution of rivers, lakes, etc  Acid precipitation (Meteorology)  Acid rain  Acidic Precipitation in Ontario Study  Ontario  
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  3. Daily precipitation chemistry listings / Special Studies Unit, Atmospheric Research and Special Programs Section, Air Resources Branch.
    By: Ontario. - Ontario. - Ontario.
    Publication info: Toronto :A.P.I.O.S. Coordination Office,1983-
    Contributed by: Ontario Ministry of the Environment (archive.org)
    Subjects: Acid precipitation (Meteorology)  Acid rain  Ontario  Periodicals  Statistics  
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  4. Effects of acid deposition on the emergence of blackflies (Diptera: Simuliidae) over 50 years from Algonquin Park streams / report prepared by C.M. Chmielewski and R.J. Hall.
    By: Chmielewski, Carol Mary, - Hall, R. J.,
    Publication info: [Toronto] :Environment Ontario,c1992.
    Contributed by: Ontario Ministry of the Environment (archive.org)
    Subjects: Acid precipitation (Meteorology)  Environmental aspects  Simuliidae  
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