TY  - BOOK
AU  - Squire, David
AU  - Squire, David
TI  - The use of visual aids to navigation / by Commodore David Squire, CBE, FNI, FCMI
SN  - 9781906915292
AV  - VK587 .S66 2013 
U1  - VK587 .S66 2013 
PY  - 2013///
PB  - London : The Nautical Institute.
ER  -