ProQuest (Firm). (2008). OECD-Umweltausblick bis 2030. OECD.
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Tohutoru Kātū Chicago (17th ed.)
ProQuest (Firm). OECD-Umweltausblick Bis 2030. Paris: OECD, 2008.
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Tohutoro MLA (9th ed.)
ProQuest (Firm). OECD-Umweltausblick Bis 2030. OECD, 2008.
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