TY  - BOOK
AU  - Olsen, Jann M
AU  - Olsen, Jann M
TI  - GMDSS course for general operator's certificate:  Instructor's Guide/ Jann M. Olsen and Tor R. Kristensen.    
SN  - 1234567890
AV  - VK397 .O522 1998 
U1  - VK397 .O522 1998 
PY  - 1998///
PB  - Norway : NOFUS
ER  -