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![Cover for Helmut M. Niegemann · Kompendium E-Learning - X.media.press (Paperback Book) [German, Softcover Reprint of the Original 1st Ed. 2004 edition] (2012)](https://imusic.b-cdn.net/images/item/original/410/9783642622410.jpg?helmut-m-niegemann-2012-kompendium-e-learning-x-media-press-paperback-book&class=scaled&v=1408507467)