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by Kolhoff, Ludger; Kortendieck, Georg; Nobauer, Brigitta; et al.
by Kolhoff, Ludger
by Ludger Kolhoff; Julia Hartung-Ziehlke; Karen Frankenstein
by Ludger Kolhoff
by Kolhoff, Ludger; Baur, Christine; Gröpler, Karl-Heinz; et al.
by Ludger Kolhoff; Christine Baur; Karl-Heinz Gröpler; et al.
by Kolhoff, Ludger; Gebhardt, Christof