TY  - BOOK
ED  - Merriam & Webster Editorial Staff
TI  - Useful tables: extracts from the American practical navigator 
SN  - 9713003659
U1  - 530.81 
PY  - 1994///
CY  - Manila
PB  - Merriam & Webster
KW  - Navigation
KW  - Tables
KW  - Nautical astronomy.
ER  -