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  1. 11
    Published 1973
    Book

    Elementary school science 2
  2. 12
    Published 1970
    Book

    Elementary school science 6 pupils guide
  3. 13
    Published 1969
    Book

    Elementary school science 2 teacher's guide
  4. 14
    Published 1969
    Book

    Elementary school science 4 teacher's guide
  5. 15
    Published 1969
    Book

    Elementary school science 4 teacher's guide
  6. 16
    Published 1969
    Book

    Elementary school science 4 pupil's guide
  7. 17
    Published 1969
    Book

    Elementary school science 5 teacher's guide
  8. 18
    Published 1969
    Book

    Elementary school science 5
  9. 19
    Published 1969
    Book

    Elementary school science 5 pupils guide
  10. 20
    Published 1969
    Book

    Elementary school science 4 pupil's guide
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