Population of the groups of countries in 1997
a) support the graphic in Core set of Indicators CSI-024 (ver. 2) figure 1 Changes in wastewater treatment in regions of Europe between 1980s and late 1990s
For references, please go to http://www.eea.europa.eu/data-and-maps/figures/population-of-the-groups-of-countries-in-1997 or scan the QR code.
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