TY  - BOOK
AU  - Tetley, L.
AU  - Calcutt, D. M.,
AU  - Tetley, L.
TI  -  Electronic navigation systems
SN  - 0750651385
U1  - 623.8/504 21
PY  - 2001///
CY  - Oxford,  Boston
PB  - Butterworth-Heinemann
KW  - Electronics in navigation
N1  - Rev. ed. of: Electronic aids to navigation. 1991; Includes index
UR  -  http://www.loc.gov/catdir/description/els03 1/00068872.html
UR  -  http://www.loc.gov/catdir/toc/els031/00068872.h tml
ER  -