Glover, David.
Screws / [by] David Glover. - Crystal Lake, IL : Rigby Interactive Library, 1997. - 24 p. : col. ill. ; 27 cm. - Simple machines .
Includes bibliographical references and index.
Introduces the principles of screws as simple machines, using examples from everyday life.
157572085X
96015800 /AC
Screws--Juvenile literature.
Screws.
Simple machines.
TJ1338 / .G48 1997
621.8/82
Screws / [by] David Glover. - Crystal Lake, IL : Rigby Interactive Library, 1997. - 24 p. : col. ill. ; 27 cm. - Simple machines .
Includes bibliographical references and index.
Introduces the principles of screws as simple machines, using examples from everyday life.
157572085X
96015800 /AC
Screws--Juvenile literature.
Screws.
Simple machines.
TJ1338 / .G48 1997
621.8/82