TY  - GEN
AU  - Clausing, Donald J.
TI  - The aviator's guide to modern navigation
SN  - 0830624082
U1  - 629.13251 
PY  - 1972///
CY  - Shrewsbury
PB  - TAB
KW  - Aeronsutics
KW  - Navigation - Aeronautics
ER  -