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1.
Experiments with chemistry / by Helen J. Challand. by
  • Challand, Helen J
Series: A New true book
Material type: Text Text; Format: print ; Literary form: Not fiction ; Audience: Juvenile;
Publication details: Chicago : Childrens Press, c1988
Availability: Items available for loan: Ayers (1)Call number: 540 CHA.

2.
Experiments with magnets / by Helen J. Challand. by
  • Challand, Helen J
Series: A New true book
Material type: Text Text; Format: print ; Literary form: Not fiction ; Audience: Juvenile;
Publication details: Chicago : Childrens Press, c1986
Availability: Items available for loan: Ayers (1)Call number: 538 CHA.

3.
Vanishing forests / by Helen J. Challand ; forestry consultant, Steven Kellert. by
  • Challand, Helen J
Material type: Text Text; Format: print ; Literary form: Not fiction ; Audience: Juvenile;
Publication details: Chicago : Childrens Press, c1991
Availability: Items available for loan: Ayers (1)Call number: 577.3 CHA.

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