https://archive.org/details/reinhold-messner-und-christoph-ransmayr-uber-wildnis-sprache-und-menschliche-grenzen
https://archive.org/details/christian-berkel-der-apfelbaum-1
https://archive.org/details/christian-berkel-der-apfelbaum-2
https://archive.org/details/entdeckter-cairn-im-neckartal-der-waldgeist
https://archive.org/details/lohn-preis-und-profit-karl-marx
https://archive.org/details/planet-ocean-yann-arthus-bertrand-michael-pitiot
https://archive.org/details/fredrik-t.-olsson-der-code-1
https://archive.org/details/fredrik-t.-olsson-der-code-2