TY  - BOOK
AU  - Royal Yaching Association
AU  - Royal Yaching Association
TI  - Navigation :  an RYA manual / Royal Yaching Association    
SN  - 715399993
AV  - VK555 .N38 1991 
U1  - VK555 .N38 1991 
PY  - 1991///
CY  - London
PB  - Royal Yaching Association
KW  - Navigation -- Handbooks, manuals, etc.Navigation, RYA manual
ER  -