https://archive.org/details/homo-sapiens-arte
https://archive.org/details/der-biophilia-effekt-heilung-aus-dem-wald-clemens-g.-arvay
https://archive.org/details/camilla-sten-das-haus-der-stillen-toten
https://archive.org/details/lisa-eckhart-ist-das-lustig-sternstunde-philosophie-srf-kultur
https://archive.org/details/erich-fromm-uber-die-ursprunge-der-aggression_202206