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Perspectives on ... distance independent education (1996)
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- Journal of the American Society for Information Science. 47(1996) no.11, S.801-883
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Special section on intelligent tutoring systems and gaming-simulation (1995)
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- CIT - Journal of computing and information technology. 3(1995) no.1, S.19-58
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Designing hypermedia for learning : proceedings of the NATO Advanced Research Workshop on Designing Hypertext/Hypermedia for Learning held in Rottenburg/Neckar, FRG, July 3-8, 1989 (1990)
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