File:Annual average nitrate concentration in groundwater aggregated to different geographical regions of Europe, (mg NO3 per l), (1992 - 2009) .png
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Annual average nitrate concentration in groundwater aggregated to different geographical regions of Europe, (mg NO3 per l), (1992 - 2009)
Graph created with data from 1992 - 2009.
Data extracted in November 2012. Most recent data available at:
EEA website WISE-SoE Groundwater: http://www.eea.europa.eu/data-and-maps/data/waterbase-groundwater-7
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