TY  - BOOK
AU  - Wilkes,Kenneth
TI  - Exercises for the ocean yacht navigator
SN  - 0245528717
AV  - VK555 
U1  - 527/.02/47971 18
PY  - 1976///
CY  - Lymington
PB  - Nautical Publishing Co.
KW  - Nautical astronomy
KW  - Problems, exercises, etc
KW  - Navigation
N1  - With answers
ER  -