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  1. 1

    Educational research in five European socialist countries a survey, 1970-1972, Bulgaria, Hungary, Poland, Romania, Yugoslavia 由 Birzea, Cesar

    出版 1973
    圖書

    Educational research in five European socialist countries a survey, 1970-1972, Bulgaria, Hungary, Poland, Romania, Yugoslavia
  2. 2

    Educational research in five European socialist countries a survey 1970-72, Bulgaria, Hungary, Poland, Romania, Yugoslavia. 由 Birzea, Cesar

    出版 1973
    圖書

    Educational research in five European socialist countries a survey 1970-72, Bulgaria, Hungary, Poland, Romania, Yugoslavia.

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