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Was ist Wissen ?

https://archive.org/details/david-neumann-was-ist-wissen 

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Tao Te King. -

https://archive.org/details/tao-te-king-das-buch-vom-sinn-und-leben-laotse 

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Schelling - Genie der Naturphilosophie. -

https://archive.org/details/jochen-kirchhoff-schelling-genie-der-naturphilosophie 

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