TY  - BOOK
AU  - Tetley, Laurie
AU  - Tetley, LaurieCalcutt, David
TI  - ELECTRONIC NAVIGATION SYSTEMS
SN  - 9780750651387
AV  - VK560 .T37 2001 
U1  - VK560 .T37 2001 
PY  - 2001///
CY  - Oxford
PB  - Butterworth-Heineman
KW  - Electronic navigation
ER  -