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Advances in web based learning - ICWL 2007: 8th International Conference, Aachen, Germany, August 19-21, 2009. Proceedings.

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Advances in Web Based Learning - ICWL 2007: 8th International Conference, Aachen, Germany, August 19-21, 2009. Proceedings.

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Advances in Web Based Learning - ICWL 2007: 8th International Conference, Aachen, Germany, August 19-21, 2009. Proceedings.