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Showing 1 - 20 results of 904 for search '"water quality"', query time: 0.69s Refine Results
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    ... history of poor water quality in the middle and lower reaches until the early 1980s. This was reflected...
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    .... But these and other forest practices may have undesirable effects on surface water quality. In naturally acid...
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    ... chronically and episodically acidified rivers. At present, water quality is improving in all affected rivers...
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    ...'s and resulted in both chronically and episodically acidified rivers. At present, water quality is improving...
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  17. 17
    ...'s and resulted in both chronically and episodically acidified rivers. At present, water quality is improving...
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  18. 18
    ...'s and resulted in both chronically and episodically acidified rivers. At present, water quality is improving...
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  19. 19
    ...'s and resulted in both chronically and episodically acidified rivers. At present, water quality is improving...
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  20. 20
    ...'s and resulted in both chronically and episodically acidified rivers. At present, water quality is improving...
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