Glover, David, 1953 Sept. 4-
Screws /
David Glover.
- Crystal Lake, IL : Rigby Interactive Library, c1997.
- 24 p. : col. ill. ; 28 cm.
- Simple machines .
- Glover, David, 1953 Sept. 4- Simple machines. .
Includes bibliographical references (p. 24) and index.
Introduces the principles of screws as simple machines, using examples from everyday life.
157572085X (lib. bdg.)
96015800 /AC
Screws.
TJ1338 / .G48 1997
621.8/82