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by Konig, Wolfgang
by Buxmann, Peter; Konig, Wolfgang
by Geihs, Kurt; Konig, Wolfgang; Westarp, Falk Von
by Wigand, Rolf T.; Mertens, Peter; Bodendorf, Freimut; et al.
by Mertens, Peter; Bodendorf, Freimut; Konig, Wolfgang; et al.