TY  - BOOK
AU  - Bailey, Gerry,
AU  - Spoor, Mike.
TI  - Rolling along: the wheel and axle 
T2  - The robotx get help from simple machines
SN  - 9780778704188 (bound)
U1  - 621.8 BAI 
PY  - 2013///
CY  - St. Catharines, ON
PB  - Crabtree Publishing, 
KW  - Wheels
KW  - Juvenile literature
KW  - Axles
KW  - Simple machines
N1  - Includes index; GRL: M; Issued also in electronic format
N2  - Explores the benefits and uses of the wheel and axle
ER  -