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Acid deposition --- Acid precipitation (Meteorology) --- Soil microbiology --- Soils --- Sulfur content --- Alberta
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Acid deposition --- Acid precipitation (Meteorology) --- Air --- Environmental aspects --- Isotopes --- Pollution --- Research --- Sulfur --- Bibliography --- Alberta
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Acid deposition --- Acid precipitation (Meteorology) --- Soil acidification --- Soil microbiology --- Alberta
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Acid deposition --- Agriculture --- Effect of acid deposition on --- Alberta
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