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Showing 1 - 2 results of 2 for search '"milligram"', query time: 0.11s Refine Results
  1. 1
    “... are milligrams per litre (mg/L). Annual values are shown where there are 6 or more measurements available...”
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  2. 2
    “... for 2003–2015. The units are milligrams per litre (mg/L). Annual values are shown where there are 6 or more...”
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