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Pulleys and gears

Royston, Angela2001
Books
This new series will develop children's knowledge of the basic principles of design and technology. It explores a range of simple mechanisms that help us every day.
Main title:
Pulleys and gears / Angela Royston.
Imprint:
Oxford : Heinemann Library, 2001.
Collation:
32p. : col. ill. ; 27 cm.
Series title:
Notes:
Originally published: 2000.Includes index.
ISBN:
9780431017501 (pbk)
Dewey class:
621.83C621.8
Local class:
J621.8
Language:
English
BRN:
157013
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