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Konrad-Adenauer-Stiftung - Geschichte der CDU - Klaus Töpfer
Environment expert Klaus Töpfer | Journal Interview - YouTube
Klaus Töpfer - Wikipedia
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Klaus TOEPFER (potter) (GER, politician) Awarding of the German Sustainability Award on November 22, 1919 in Duesseldorf/Germany. | Usage worldwide Stock Photo - Alamy
IASS Calls for Applications to the Klaus Töpfer Sustainability Fellowship | Institute for Advanced Sustainability Studies
Prof. Dr. Klaus Töpfer - book as speaker - Speaker Agency londonspeakerbureau.de
Klaus Töpfer: Ex-Umweltminister kritisiert Umweltpolitik der Union - DER SPIEGEL
Klaus Topfer quote: Protecting biodiversity is just as important and critical to the...
Klaus Töpfer - Simple English Wikipedia, the free encyclopedia