TY  - BOOK
AU  - THOM,TREVOR
TI  - AIR NAVIGATION / 
U1  - 629.13252 
PY  - 1995///
CY  - [S.N] : 
PB  - AIRLIFE PUBLISHING ، 
KW  - NAVIGATION
KW  - FLYING
KW  - AIR NAVIGATION
ER  -