TY  - BOOK
AU  - Adler,David A.
AU  - Raff,Anna
TI  - Simple machines: wheels, levers, and pulleys 
SN  - 9780823433094 (hardcover)
AV  - TJ147 .A4154 2015
U1  - 621.8 23
PY  - 2015///
CY  - New York, NY
PB  - Holiday House
KW  - Simple machines
KW  - Juvenile literature
N1  - Ages 4-8; Grades K-3
ER  -