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2. A. P. Altshuller, and G. A. McBean , 1980 . Deuxieme rapport du groupe consultatif de recherche Etats-Unis-Canada sur le transport a grande distance de polluants atmospheriques . Environnement Canada, 39 pp.
3. Acidification of lakes in Canada by acid precipitation and the resulting effects on fishes
4. Acidification of the La Cloche Mountain Lakes, Ontario, and Resulting Fish Mortalities