TY  - BOOK
AU  - U.S. Air Force Space System Division, N ATO - Team
TI  - Navstar GPS user equipment: Introduction
U1  - 629.4743 
PY  - 1991///
CY  - Washington, D.C.
PB  - Navtech Seminars
KW  - Artificial satellites - Communication Space vehicle - Positioning Global positioning system
ER  -