TY  - BOOK
AU  - Samuelson,Robert J.
AU  - Mata,Marlin
TI  - GPS Modernization: challenges and military implications 
SN  - 9781619425897 (hbk.)
AV  - UG1523 .G725 2012
PY  - 2012///
CY  - New York
PB  - Nova Science Publishers
KW  - Astronautics, Military
KW  - United States
KW  - Global Positioning System
ER  -