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Carvalho, A.A. (2007). Looking for a Model to Structure Learning Objects: MPLO (Multiple Perspectives Learning Objects). In T. Bastiaens & S. Carliner (Eds.), Proceedings of E-Learn 2007--World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (pp. 37-45). Quebec City, Canada: Association for the Advancement of Computing in Education (AACE).