Weighing & Balancing /
By Jane Jonas Srivastava : Illustrated by Aliki
- London : Adam & Charles Black , 1970.
- 38 pages : color illustrations ; 20 cm .
- Young math books .
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Instructs the reader in constructing a sensitive balance device from a wooden rod, string, cup hooks, and paper plates which can be used for experiments to determine the weight of some common objects.