TY  - BOOK
AU  - Wilkner, Kenneth
AU  - 
TI  - Practical yacht navigator
U1  - 527:797.14 
PY  - 1974///
CY  - Lymington
PB  - Nautical publishing
KW  - practical yacht navigator
KW  - Navigation
KW  - Nautical astronomy
KW  - Aeronautical astronomy
ER  -