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Global Positioning

Compare Prices and Read Reviews on Home at Epinions.comRanking
Epinions has the best comparison shopping information on Home. Compare prices from across the web and read reviews from other consumers on Home before you decide to buy.
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http://www.epinions.com/otdr-Electronics-GPS_Systems
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http://www.epinions.com/otdr-Electronics-GPS_Systems

Howstuffworks "How GPS Receivers Work"Ranking
A GPS receiver uses signals from satellites to pinpoint its exact location. Find out how the GPS lets you find your way around the globe.
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http://www.howstuffworks.com/gps.htm
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http://www.howstuffworks.com/gps.htm

GORP Hiking Skills - Navigation - In the BeginningRanking
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http://gorp.away.com/gorp/activity/hiking/skills/navigation/lat_lon.htm

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