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Learning and Instruction in the Digital Age > Knowledge Representation and Mental Models (Ifenthaler) > 69-85
Educational Technology Research and Development > 2009 > 57 > 6 > 753-765
Learning and Instruction in the Digital Age > Knowledge Representation and Mental Models (Ifenthaler) > 69-85
Educational Technology Research and Development > 2009 > 57 > 6 > 753-765