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  1. 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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