Search Results - Helsel, Sandra K

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  1. 1
    Interactive optical technologies in education and training markets and trends

    Interactive optical technologies in education and training markets and trends by Helsel, Sandra K

    Published 1990
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  2. 2
    Virtual reality theory, practice, and promise

    Virtual reality theory, practice, and promise

    Published 1991
    Other Authors: “…Helsel, Sandra K.…”
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