TY  - BOOK
AU  - Kaplan,Elliott D.
TI  - Understanding GPS: principles and applications 
SN  - 0890067937 (alk. paper)
U1  - 623.893 
PY  - 1996///
CY  - Boston
PB  - Artech House
KW  - Global Positioning System
KW  - NUST
ER  -