TY  - BOOK
AU  - Welbourne, G V
TI  - Flight and engines
U1  - 629.1 WEL 
PY  - 1945///.
CY  - London : 
PB  - Blackie and Son, 
KW  - Airplanes engines
KW  - Flight
N1  - pt 1. principles of flight - pt 2. engines
ER  -