TY  - BOOK
AU  - Witherby Seamanship International
AU  - Witherby Seamanship International
TI  - Regulatory primer for mates & masters :  covering current & new regulations to 1 September 2011/ Witherby Seamanship international.    
SN  - 9781856095150
AV  - VK541 .W774 2011 
U1  - VK541 .W774 2011 
PY  - 2011///
PB  - Livingston : Witherby Seamanship International
ER  -