TY  - BOOK
AU  -  Mullins, Matt
TI  -  How does it fly?. Helicopter
T2  - Community connections
SN  - 9781610800655
U1  - 629.133352 
PY  - 2012///
CY  - Ann Arbor, Michigan
PB  - Cherry Lake Publishing
KW  - Helicopters -- Juvenile literature
KW  -  Helicopters
N1  - includes bibliographical reference, index and glossary
N2  - Introduces helicopters, discusses how they fly, and shows different designs from Leonardo da Vinci's flying machine to the machines seen today
ER  -