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  1. 1
    by Manning, Mick
    Published 1997
    Subjects
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    Nature school /
  2. 2
    by Walker, Ormiston H.
    Published 1994
    Subjects “...Science projects Problems, exercises, etc. Juvenile literature...”
    Book
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    Science construction projects : 50 working models.
  3. 3
    by Walker, Ormiston H.
    Published 2004
    Subjects “...Science projects Juvenile literature....”
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    100 scientific construction projects : science principles, technology, science toys, measuring devices /
  4. 4
    by Walker, Ormiston H.
    Published 1994
    Subjects “...Science projects Juvenile literature....”
    Book
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    Science construction projects : 50 working models.

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