TY  - BOOK
AU  - Drake, Colonel Rollen H.
TI  - Aircraft electrical systems, hydraulic systems
U1  - 629.135 
PY  - 1949///
CY  - New York
PB  - Macmillan Press, Ltd.
KW  - Aeronautical instruments
KW  - Airplanes--electric equipment
KW  - Instrument flying
ER  -