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  1. 1

    Effects of the use of videotapes on biology students achievement, retention and attitude towards science по De Gulan, Ma. Victoria R.

    Опубликовано 1999
    Диссертация

    Effects of the use of videotapes on biology students achievement, retention and attitude towards science
  2. 2

    Students' achievement in ecology in relation to their perceptions of teacher performance and subject difficulty по Japos, Neria Tagaro

    Опубликовано 1985
    Диссертация

    Students' achievement in ecology in relation to their perceptions of teacher performance and subject difficulty

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