TY  - BOOK
AU  - Weems,P.V.H.
AU  - Everitt,P.F.
AU  - Hughes,Arthur J.
TI  - Air navigation, British empire edition
U1  - 629.1325 
PY  - 1942///
CY  - London
PB  - McGraw-Hill
KW  - Navigation (Aeronautics)
N1  - Includes index
ER  -