TY  - BOOK
AU  - Hobbs,Richard R.
TI  - Marine navigation: piloting and celestial and electronic navigation 
SN  - 1557503818
AV  - VK555  .H62 1998
PY  - 1998///
CY  - Annapolis, MD
PB  - Naval Institute Press
KW  - Navigation
KW  - Pilots and pilotage
KW  - Nautical astronomy
ER  -