Acknowledged author Klaus Gille Matthias Gretzschel wrote Hagenbeck. Ein zoologisches Paradies comprising pages back in 2007. Textbook and etextbook are published under ISBN 3861088738 and 9783861088738. Since then Hagenbeck. Ein zoologisches Paradies textbook was available to sell back to BooksRun online for the top buyback price or rent at the marketplace.