1 - 1 toradh á dtaispeáint as 1 toradh san iomlán ar an gcuardach 'University of Pittsburgh. Learning Research and Development Center', am iarratais: 0.02s Beachtaigh na torthaí
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    Research and development and school change : a symposium of the Learning Research and Development Center, University of Pittsburgh /
    Foilsithe / Cruthaithe 1978
    “…University of Pittsburgh. Learning Research and Development Center…”
    LEABHAR
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