McNamara, Joel GPS for dummies / by Joel McNamara. - xx, 382 p. : ill. ; 24 cm. Includes index. ISBN: 0764569333 (pbk.) : ¹14.99 LCCN: 2004102594 Nat. Bib. No.: GBA4-X7543 Nat. Bib. Agency Control No.: 0764569333 Uk Subjects--Topical Terms: Global Positioning SystemOutdoor recreation--Equipment and supplies LC Class. No.: G109.5 / .M365 2004