TY  - GEN
AU  - David Petersen
TI  - I Want to Know About: Helicopters
SN  - 0516016806
U1  - 629.133/352 19
PY  - 1983///
CY  - Chicago
PB  - Children's Press
KW  - English
KW  - Helicopters
KW  - General
N1  - Includes index; A new true book


N2  - Highlights basic information about the history of helicopters, their parts and how they function, and the types and uses of whirlybirds
ER  -