TY  - BOOK
AU  - Subramaniam,H.
TI  - Practical navigation / 
T2  - Nutshell series, bk. 1. 
U1  - 623.89 23
PY  - 2004///.
CY  - Mumbai : 
PB  - Vijaya Publications, 
KW  - Navigation -- Problems, exercises, etc.
KW  - Navigation.
ER  -