Eisenbach, Ulrich (2015). "Wirtschaft, Gesellschaft und IHK in Mittelnassau" (PDF) (in German). IHK Limburg. p. 28. Retrieved 15 November 2023. Erwin Gatz (1977)...
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Heinrich-Verlag GmBH. p. 4. ISBN 978-3-89889-167-7. "Kaufkraft 2017" (PDF). IHK Wiesbaden. Archived from the original (PDF) on 25 August 2017. Retrieved...
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Sustainable Development Evangelical Church in Germany (EKD). Website of the IHK Chemnitz | Business trifft Afrika 2017 Archived 3 July 2018 at the Wayback...
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