TY  - BOOK
AU  - Spencer,John
TI  - Global Positioning System: a field guide for the social sciences 
SN  - 1405101849 (hardback)
PY  - 2003///
CY  - Malden, MA
PB  - Blackwell
KW  - Global positioning system
N1  - Includes bibliographical references (p. [204]-207)
ER  -