TY  - BOOK
AU  - Kaplan, Elliott D 
AU  - Hegarty, Christopher J 
TI  - Understanding GPS: Principles and applications
SN  - 9781580538947
U1  - 623.893 KAP/U 
PY  - 2006///
CY  - Bostan
PB  - Artech House Publishers
KW  - GLOBAL POSITIONING SYSTEM
ER  -