TY  - BOOK
AU  - Eur Ing J. J. Seaton
AU  - P. C. Smith
TI  - GMDSS for vigators
SN  - 0-7506-2177-x
U1  -  623.8932 
PY  - 1994///
CY  - Boston,USA
PB  - Butterworth
KW  - Artificial satellites in vigation
ER  -