Erakusten 1 - 1 emaitzak -- 1 bilaketa honetara 'Educational Research and Development Center (Yemen)', Bilaketaren denbora: 0,02s Findu emaitzak
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    Improving the Efficiency of Educational Systems Project. : indicators of educational effectiveness and efficiency /
    nork Windham, Doughlas M.
    Argitaratua 1990
    "August 1984-1994."
    “...Educational Research and Development Center (Yemen)...”
    Liburua
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