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Are you Klaus Wiegandt, author of the books below?
Mut zur Nachhaltigkeit - 12 Wege in die Zukunft by Klaus Wiegandt Drei Grad Mehr by Klaus Wiegandt Evolution und Kultur des Menschen by Klaus Wiegandt 3 Degrees More by Klaus Wiegandt Культурні цінності Європи by Klaus Wiegandt Feeding the Planet by Klaus Hahlbrock Mensch Und Kosmos by Klaus Wiegandt Ende der Artenvielfalt? by Josef H. Reichholf Was verträgt unsere Erde noch? Wege in die Nachhaltigkeit by Jill Jäger Perspektiven einer nachhaltigen Entwicklung by Harald Welzer


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