The story of tools
Subtitle: how they built our world and shaped man's life.
Edition: [1st ed.]
Publisher: Norton
Published: 1969
Place of publication: New York
Language: eng
Number of pages: 150
Subjects: Technology -- Juvenile literature.; Tools -- Juvenile literature.; Technology.; Tools.
Description: Explains how man has achieved all the mechanical advances he knows through the use of five simple machines--lever, wheel and axle, pulley, screw, wedge, and plane.
Notes: Bibliography: p. [143]-145.