TY  - BOOK
AU  - Sarma,P.M.
TI  - Principles of navigation / 
U1  - 623.89 23
PY  - 2001///.
CY  - Mumbai : 
PB  - Bhandarkar, 
KW  - Navigation charts.
KW  - The Solar system.
KW  - Solar Time.
ER  -