1.

雑誌
雑誌
1. Europe's energy position
European Commission ; Market Observatory for Energy
出版情報: Luxembourg : Office for Official Publications of the European Communities, 2008-2011
巻次(年次): 2008 (2008)-2010 (2010)
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2.

雑誌
雑誌
2. EU transport in figures : statistical pocketbook
European Commission
出版情報: Luxemburg : Publications Office of the European Union, 2011-
巻次(年次): 2011 (2011)-
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