TY  - BOOK
AU  - Nagaraja, N.S 
TI  - Elements of electronic navigation 
SN  - 0-07-462301-X 
U1  - 621.384 8 NAG  
PY  - 2002///
CY  - Tata mcgraw hill 
PB  - New Delhi 
KW  - RADAR
ER  -