TY  - BOOK
AU  - Doudna,Kelly
TI  - The kids' book of simple machines: cool projects and activities that make science fun 
SN  - 9781938063596
U1  - 621.8 
PY  - 2015///
CY  - Minneapolis
PB  - Mighty Media Press
KW  - Simple machines
KW  - Juvenile literature
N1  - Includes glossary and index; Primary; 600-699; 621.8
N2  - Introduces six simple machines, describing how they work in more complex machinery and how they are used every day
ER  -