TY  - BOOK
ED  - Naval Education and Training Program
TI  - Navy electricity and electronics training series
U1  - 629.045 
PY  - 1980///
CY  - Washington, D.C.
PB  - United States Government Printing Office
KW  - Navigation
KW  - Global positioning system
N1  - NAVEDTRA 172-15-00-80
ER  -