2026 Reading Challenge

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Are you Manfred Kostka, author of the books below?
Wale und Delphine by Petra Deimer Reptilien Und Amphibien by Manfred Niekisch Haie und Rochen by Vitus B. Dröscher Unser Kosmos - an den Grenzen von Raum und Zeit by Erich Übelacker Höhlen by David E. Portner Schiffe by Arnold Kludas Modern Fizika # 15 by Erich Übelacker Das Mikroskop by Rainer Köthe Piraten by rainer-crummenerl Fernsehen by Herbert Heinzelmann


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