Measuring progress towards a more sustainable Europe: sustainable development indicators for the European Union, data 1990-2005 - European Commission (Λουξεμβούργο : Υπηρεσία Επισήμων Εκδόσεων των Ευρωπαϊκών Κοινοτήτων, 2005)
Keywords: Sustainable development -- European Union countries; Sustainable development -- European Union countries -- Statistics; Environmental indicators -- European Union countries