5899169
9780972120227
Alvin Derouen is an electronics engineer, who lives and is based in Sedona, AZ, who has a passion for backpacking and technology; as a result the GPS is his constant companion on the trails. The procurement of accurate GPS data is his valuable contribution to the maps and trail information.Andres, Dennis Michael is the author of 'Sedona's Top 10 Hikes', published 2004 under ISBN 9780972120227 and ISBN 097212022X.
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