TY  - BOOK
ED  - International Maritime Organization.
TI  - Model course 1.25 General operator's certificate for the global maritime distress and safety system : : course and compendium 
SN  - 9789280116113
U1  - 623.8932  23
PY  - 2015///
CY  - London
PB  - International Maritime Organization.
KW  - Artificial satellites in navigation
KW  - Navigation--Safety measures
KW  - Radio in navigation
ER  -