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![Cover for Helmut M Niegemann · Kompendium Multimediales Lernen (Book) [2008 edition] (2008)](https://imusic.b-cdn.net/images/item/original/257/9783540372257.jpg?helmut-m-niegemann-2008-kompendium-multimediales-lernen-book&class=scaled&v=1602850957)
![Cover for Helmut M Niegemann · Kompendium E-Learning - X.Media.Press (Hardcover Book) [2004 edition] (2003)](https://imusic.b-cdn.net/images/item/original/168/9783540438168.jpg?helmut-m-niegemann-2003-kompendium-e-learning-x-media-press-hardcover-book&class=scaled&v=1543036304)