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Karl Heinz Roth - historian and physician; management-member at the Foundation for 20th Century Social History, based in Bremen. Publisher of many works about social, corporate, economic and scientific history.Jan-Peter Abraham - graduate in research on foreign-language teaching and in Slavonic Studies. Worked for the Institute for Foreign Cultural Relations (ifa) in Kharkov (Ukraine), Kishinv (Moldova) and Ashgabat (urkmenistan). Currently lives in Leipzig. Publishes translations of books from Russian and Czech.