TY  - BOOK
AU  - Zweng, Charles Alfonso
TI  - PRIVATE PILOT HELICOPTER RATING
U1  - 629.5335 
PY  - 1964///
CY  - North Hollywood, Calif.
PB  - Pan American Navigation Service
KW  - Helicopters -- Piloting
N1  - First Issued In 1954 As Part Of The Zweng Manual : Helicopter Rating
ER  -