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  1. 1

    A summary of research in science education for the years 1965-67, secondary level

    Publicat 1969
    Llibre

    A summary of research in science education for the years 1965-67, secondary level
  2. 2

    A preparatory guide to individual investigations in science per Westmeyer, Paul

    Publicat 1960
    Llibre

    A preparatory guide to individual investigations in science

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