Subjects: “...air pollution...”
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“... of gaseous pollutants such as carbon monoxide (CO), nitrogen oxides (NOx) and hydrocarbons (HC) by more than...”
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“... their concentrations were decreasing. It was released 83.8 . 106 m3 polluted air containing 211 314 kg CO2, 5 kg N2O, 1...”
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“...A Bulgarian project at Maritsa East power station demonstrated the proper transformation of air...”
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