Wheels & AxlesBook - 2011
"A foundational look at wheels and axles, explaining how these simple machines work and describing some common examples, such as doorknobs, that have been used throughout history"--Provided by publisher.
Publisher: Mankato, MN : Creative Education, c2011.
Edition: 1st ed.
Branch Call Number: J 621.811 Bod
Characteristics: 23 p. : col. ill. ; 23 x 26 cm.
Alternative Title: Wheels and axles