https://usbig.net/wp-content/uploads/2023/03/USBIG-logo-1a.png00Michael Howardhttps://usbig.net/wp-content/uploads/2023/03/USBIG-logo-1a.pngMichael Howard2011-07-05 02:17:382011-07-05 02:17:38"Modell einer neuen Zeiteinteilung für das Tätigsein des Menschen"
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