Sadler, Wendy.
Using springs /
Wendy Sadler.
- Chicago : Raintree, c2005.
- 32 p. : col. ill. ; 28 cm.
- Raintree perspectives .
- Machines inside machines .
- Sadler, Wendy. Machines inside machines. .
Includes bibliographical references (p. 30) and index.
Introduction to springs, one of the simple machines.
1410914461
9781410914460
Springs (Mechanism)
Simple machines.
TJ210 / .S23 2005
621.824